diff --git a/hphp/hack/src/Cargo.lock b/hphp/hack/src/Cargo.lock
index e8f6e554fceb9..81c933a36cef7 100644
--- a/hphp/hack/src/Cargo.lock
+++ b/hphp/hack/src/Cargo.lock
@@ -90,7 +90,7 @@ name = "analysis"
 version = "0.0.0"
 dependencies = [
  "ir_core",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "newtype",
  "print",
 ]
@@ -276,7 +276,7 @@ dependencies = [
  "anyhow",
  "hash",
  "ir_core",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "naming_special_names_rust",
  "parse_macro_ir",
@@ -287,7 +287,7 @@ name = "assemble_opcode_macro"
 version = "0.0.0"
 dependencies = [
  "hhbc-gen",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "proc-macro2",
  "quote",
  "syn 1.0.109",
@@ -380,7 +380,7 @@ dependencies = [
 name = "balanced_partition"
 version = "0.0.0"
 dependencies = [
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "rayon",
 ]
@@ -517,7 +517,7 @@ dependencies = [
  "hhbc_string_utils",
  "hhvm_hhbc_defs_ffi",
  "hhvm_types_ffi",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "print_opcode",
  "relative_path",
  "thiserror 2.0.7",
@@ -786,7 +786,7 @@ dependencies = [
  "hash",
  "hhbc",
  "hhbc_string_utils",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "naming_special_names_rust",
  "oxidized",
  "stack_limit",
@@ -937,7 +937,7 @@ dependencies = [
  "hhbc",
  "hhbc_string_utils",
  "indexmap 2.2.6",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "naming_special_names_rust",
  "oxidized",
  "stack_limit",
@@ -1401,7 +1401,7 @@ dependencies = [
  "dep_graph_delta",
  "depgraph_reader",
  "hash",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "ocamlrep",
  "ocamlrep_custom",
  "parking_lot",
@@ -1558,7 +1558,7 @@ dependencies = [
  "bstr",
  "elaborate_namespaces_visitor",
  "hack_macros",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "naming_special_names_rust",
  "oxidized",
  "relative_path",
@@ -1645,7 +1645,7 @@ dependencies = [
  "hhvm_types_ffi",
  "indexmap 2.2.6",
  "instruction_sequence",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "label_rewriter",
  "lazy_static",
  "naming_special_names_rust",
@@ -1960,7 +1960,7 @@ dependencies = [
  "eq_modulo_pos",
  "hash",
  "indexmap 2.2.6",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "oxidized",
  "pos",
  "shallow_decl_provider",
@@ -2164,7 +2164,7 @@ dependencies = [
  "hhvm_options",
  "ir",
  "ir_to_bc",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "jwalk",
  "log",
  "multifile_rust",
@@ -2747,7 +2747,7 @@ dependencies = [
  "hhbc",
  "instruction_sequence",
  "ir",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "smallvec",
  "stack_depth",
@@ -2775,9 +2775,9 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.13.0"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
 dependencies = [
  "either",
 ]
@@ -2941,7 +2941,7 @@ dependencies = [
  "hash",
  "hhbc_string_utils",
  "html_entities",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "lazy_static",
  "lint_rust",
  "naming_special_names_rust",
@@ -3556,7 +3556,7 @@ dependencies = [
  "hh24_types",
  "hh_autoimport_rust",
  "hh_hash",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "naming_types",
  "no_pos_hash",
  "ocamlrep",
@@ -3714,7 +3714,7 @@ version = "0.0.0"
 dependencies = [
  "bitflags 2.6.0",
  "bumpalo",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "line_break_map",
  "ocaml_helper",
  "ocamlrep",
@@ -3742,7 +3742,7 @@ dependencies = [
  "analysis",
  "hash",
  "ir_core",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "newtype",
  "print",
@@ -4328,7 +4328,7 @@ dependencies = [
  "escaper",
  "hash",
  "hh_autoimport_rust",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "naming_special_names_rust",
  "oxidized",
  "parser_core_types",
@@ -4477,7 +4477,7 @@ dependencies = [
  "hash",
  "hhbc",
  "hhbc-gen",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "newtype",
 ]
@@ -4590,7 +4590,7 @@ dependencies = [
  "anyhow",
  "datastore",
  "decl_parser",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "naming_provider",
  "oxidized",
  "pos",
@@ -5026,7 +5026,7 @@ dependencies = [
  "hhbc",
  "hhbc_string_utils",
  "ir",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "log",
  "naming_special_names_rust",
  "newtype",
@@ -5039,7 +5039,7 @@ dependencies = [
 name = "textual_macros"
 version = "0.0.0"
 dependencies = [
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "proc-macro-error",
  "proc-macro2",
  "quote",
@@ -5384,7 +5384,7 @@ version = "0.0.0"
 dependencies = [
  "analysis",
  "ir_core",
- "itertools 0.13.0",
+ "itertools 0.14.0",
  "print",
 ]
 
diff --git a/hphp/hack/src/depgraph/balanced_partition/cargo/balanced_partition/Cargo.toml b/hphp/hack/src/depgraph/balanced_partition/cargo/balanced_partition/Cargo.toml
index be41d4eefa991..8344166de6673 100644
--- a/hphp/hack/src/depgraph/balanced_partition/cargo/balanced_partition/Cargo.toml
+++ b/hphp/hack/src/depgraph/balanced_partition/cargo/balanced_partition/Cargo.toml
@@ -12,6 +12,6 @@ path = "../../lib.rs"
 crate-type = ["lib", "staticlib"]
 
 [dependencies]
-itertools = "0.13.0"
+itertools = "0.14.0"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 rayon = "1.9.0"
diff --git a/hphp/hack/src/deps/cargo/deps_rust/Cargo.toml b/hphp/hack/src/deps/cargo/deps_rust/Cargo.toml
index 0c6f2d5e93dab..70164eed8d845 100644
--- a/hphp/hack/src/deps/cargo/deps_rust/Cargo.toml
+++ b/hphp/hack/src/deps/cargo/deps_rust/Cargo.toml
@@ -15,7 +15,7 @@ crate-type = ["lib", "staticlib"]
 dep_graph_delta = { version = "0.0.0", path = "../.." }
 depgraph_reader = { version = "0.0.0", path = "../../../depgraph/cargo/depgraph_reader" }
 hash = { version = "0.0.0", path = "../../../utils/hash" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 ocamlrep = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
 ocamlrep_custom = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
 parking_lot = { version = "0.12.1", features = ["send_guard"] }
diff --git a/hphp/hack/src/elab/Cargo.toml b/hphp/hack/src/elab/Cargo.toml
index 68dd4719714fd..d5c9feee2581b 100644
--- a/hphp/hack/src/elab/Cargo.toml
+++ b/hphp/hack/src/elab/Cargo.toml
@@ -15,7 +15,7 @@ bitflags = { version = "2.6", features = ["serde"] }
 bstr = { version = "1.10.0", features = ["serde", "std", "unicode"] }
 elaborate_namespaces_visitor = { version = "0.0.0", path = "../naming/cargo/elaborate_namespaces" }
 hack_macros = { version = "0.0.0", path = "../utils/hack_macros/cargo/hack_macros" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 naming_special_names_rust = { version = "0.0.0", path = "../naming" }
 oxidized = { version = "0.0.0", path = "../oxidized" }
 relative_path = { version = "0.0.0", path = "../utils/rust/relative_path" }
diff --git a/hphp/hack/src/hackc/Cargo.toml b/hphp/hack/src/hackc/Cargo.toml
index b89b59f918b1a..d313e8315f138 100644
--- a/hphp/hack/src/hackc/Cargo.toml
+++ b/hphp/hack/src/hackc/Cargo.toml
@@ -39,7 +39,7 @@ hhvm_config = { version = "0.0.0", path = "hhvm_config/cargo/options" }
 hhvm_options = { version = "0.0.0", path = "../utils/hhvm_options" }
 ir = { version = "0.0.0", path = "ir" }
 ir_to_bc = { version = "0.0.0", path = "ir/conversions/ir_to_bc" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 jwalk = "0.6"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 multifile_rust = { version = "0.0.0", path = "../utils/multifile" }
diff --git a/hphp/hack/src/hackc/bytecode_printer/Cargo.toml b/hphp/hack/src/hackc/bytecode_printer/Cargo.toml
index d3d227652ee9b..37543b3fbba98 100644
--- a/hphp/hack/src/hackc/bytecode_printer/Cargo.toml
+++ b/hphp/hack/src/hackc/bytecode_printer/Cargo.toml
@@ -20,7 +20,7 @@ hhbc = { version = "0.0.0", path = "../hhbc/cargo/hhbc" }
 hhbc_string_utils = { version = "0.0.0", path = "../utils/cargo/hhbc_string_utils" }
 hhvm_hhbc_defs_ffi = { version = "0.0.0", path = "../hhvm_cxx/hhvm_hhbc_defs" }
 hhvm_types_ffi = { version = "0.0.0", path = "../hhvm_cxx/hhvm_types" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 print_opcode = { version = "0.0.0", path = "print_opcode/cargo/lib" }
 relative_path = { version = "0.0.0", path = "../../utils/rust/relative_path" }
 thiserror = "2"
diff --git a/hphp/hack/src/hackc/cargo/assemble_opcode_macro/Cargo.toml b/hphp/hack/src/hackc/cargo/assemble_opcode_macro/Cargo.toml
index 26a45769877ac..bb7af97e7275f 100644
--- a/hphp/hack/src/hackc/cargo/assemble_opcode_macro/Cargo.toml
+++ b/hphp/hack/src/hackc/cargo/assemble_opcode_macro/Cargo.toml
@@ -15,7 +15,7 @@ proc-macro = true
 
 [dependencies]
 hhbc-gen = { version = "0.0.0", path = "../../../../../tools/hhbc-gen" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 proc-macro2 = { version = "1.0.70", features = ["span-locations"] }
 quote = "1.0.29"
 syn = { version = "1.0.109", features = ["extra-traits", "fold", "full", "visit", "visit-mut"] }
diff --git a/hphp/hack/src/hackc/compile/cargo/closure_convert/Cargo.toml b/hphp/hack/src/hackc/compile/cargo/closure_convert/Cargo.toml
index 0e6f403d15738..94ee46225a6c8 100644
--- a/hphp/hack/src/hackc/compile/cargo/closure_convert/Cargo.toml
+++ b/hphp/hack/src/hackc/compile/cargo/closure_convert/Cargo.toml
@@ -19,7 +19,7 @@ hack_macros = { version = "0.0.0", path = "../../../../utils/hack_macros/cargo/h
 hash = { version = "0.0.0", path = "../../../../utils/hash" }
 hhbc = { version = "0.0.0", path = "../../../hhbc/cargo/hhbc" }
 hhbc_string_utils = { version = "0.0.0", path = "../../../utils/cargo/hhbc_string_utils" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 naming_special_names_rust = { version = "0.0.0", path = "../../../../naming" }
 oxidized = { version = "0.0.0", path = "../../../../oxidized" }
 stack_limit = { version = "0.0.0", path = "../../../../utils/stack_limit" }
diff --git a/hphp/hack/src/hackc/emitter/cargo/constant_folder/Cargo.toml b/hphp/hack/src/hackc/emitter/cargo/constant_folder/Cargo.toml
index d49493a79c79f..e91652c841877 100644
--- a/hphp/hack/src/hackc/emitter/cargo/constant_folder/Cargo.toml
+++ b/hphp/hack/src/hackc/emitter/cargo/constant_folder/Cargo.toml
@@ -16,7 +16,7 @@ env = { version = "0.0.0", path = "../env" }
 hhbc = { version = "0.0.0", path = "../../../hhbc/cargo/hhbc" }
 hhbc_string_utils = { version = "0.0.0", path = "../../../utils/cargo/hhbc_string_utils" }
 indexmap = { version = "2.2.6", features = ["arbitrary", "rayon", "serde"] }
-itertools = "0.13.0"
+itertools = "0.14.0"
 naming_special_names_rust = { version = "0.0.0", path = "../../../../naming" }
 oxidized = { version = "0.0.0", path = "../../../../oxidized" }
 stack_limit = { version = "0.0.0", path = "../../../../utils/stack_limit" }
diff --git a/hphp/hack/src/hackc/emitter/cargo/emit_unit/Cargo.toml b/hphp/hack/src/hackc/emitter/cargo/emit_unit/Cargo.toml
index 87a7d73ced10c..dfc20e930685a 100644
--- a/hphp/hack/src/hackc/emitter/cargo/emit_unit/Cargo.toml
+++ b/hphp/hack/src/hackc/emitter/cargo/emit_unit/Cargo.toml
@@ -32,7 +32,7 @@ hhbc_string_utils = { version = "0.0.0", path = "../../../utils/cargo/hhbc_strin
 hhvm_types_ffi = { version = "0.0.0", path = "../../../hhvm_cxx/hhvm_types" }
 indexmap = { version = "2.2.6", features = ["arbitrary", "rayon", "serde"] }
 instruction_sequence = { version = "0.0.0", path = "../instruction_sequence" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 label_rewriter = { version = "0.0.0", path = "../label_rewriter" }
 lazy_static = "1.4"
 naming_special_names_rust = { version = "0.0.0", path = "../../../../naming" }
diff --git a/hphp/hack/src/hackc/ir/analysis/Cargo.toml b/hphp/hack/src/hackc/ir/analysis/Cargo.toml
index f1a80a6cb7693..4c38210985f33 100644
--- a/hphp/hack/src/hackc/ir/analysis/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/analysis/Cargo.toml
@@ -12,6 +12,6 @@ path = "lib.rs"
 
 [dependencies]
 ir_core = { version = "0.0.0", path = "../ir_core" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 newtype = { version = "0.0.0", path = "../../../utils/newtype" }
 print = { version = "0.0.0", path = "../print" }
diff --git a/hphp/hack/src/hackc/ir/assemble/Cargo.toml b/hphp/hack/src/hackc/ir/assemble/Cargo.toml
index 64633d1b55791..f4ad3968d9241 100644
--- a/hphp/hack/src/hackc/ir/assemble/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/assemble/Cargo.toml
@@ -14,7 +14,7 @@ path = "lib.rs"
 anyhow = "1.0.86"
 hash = { version = "0.0.0", path = "../../../utils/hash" }
 ir_core = { version = "0.0.0", path = "../ir_core" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 naming_special_names_rust = { version = "0.0.0", path = "../../../naming" }
 parse_macro_ir = { version = "0.0.0", path = "../cargo/parse_macro" }
diff --git a/hphp/hack/src/hackc/ir/conversions/ir_to_bc/Cargo.toml b/hphp/hack/src/hackc/ir/conversions/ir_to_bc/Cargo.toml
index 41281504e8bc1..e313b2a73e2a2 100644
--- a/hphp/hack/src/hackc/ir/conversions/ir_to_bc/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/conversions/ir_to_bc/Cargo.toml
@@ -15,7 +15,7 @@ hash = { version = "0.0.0", path = "../../../../utils/hash" }
 hhbc = { version = "0.0.0", path = "../../../hhbc/cargo/hhbc" }
 instruction_sequence = { version = "0.0.0", path = "../../../emitter/cargo/instruction_sequence" }
 ir = { version = "0.0.0", path = "../.." }
-itertools = "0.13.0"
+itertools = "0.14.0"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 smallvec = { version = "1.6.1", features = ["serde", "specialization", "union"] }
 stack_depth = { version = "0.0.0", path = "../../../utils/cargo/stack_depth" }
diff --git a/hphp/hack/src/hackc/ir/conversions/textual/cargo/macros/Cargo.toml b/hphp/hack/src/hackc/ir/conversions/textual/cargo/macros/Cargo.toml
index 486221607cd46..026911b4e3a6e 100644
--- a/hphp/hack/src/hackc/ir/conversions/textual/cargo/macros/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/conversions/textual/cargo/macros/Cargo.toml
@@ -14,7 +14,7 @@ doctest = false
 proc-macro = true
 
 [dependencies]
-itertools = "0.13.0"
+itertools = "0.14.0"
 proc-macro-error = "1.0"
 proc-macro2 = { version = "1.0.70", features = ["span-locations"] }
 quote = "1.0.29"
diff --git a/hphp/hack/src/hackc/ir/conversions/textual/cargo/textual/Cargo.toml b/hphp/hack/src/hackc/ir/conversions/textual/cargo/textual/Cargo.toml
index cd7e231bc87e4..e1936be8ebdc2 100644
--- a/hphp/hack/src/hackc/ir/conversions/textual/cargo/textual/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/conversions/textual/cargo/textual/Cargo.toml
@@ -19,7 +19,7 @@ hash = { version = "0.0.0", path = "../../../../../../utils/hash" }
 hhbc = { version = "0.0.0", path = "../../../../../hhbc/cargo/hhbc" }
 hhbc_string_utils = { version = "0.0.0", path = "../../../../../utils/cargo/hhbc_string_utils" }
 ir = { version = "0.0.0", path = "../../../.." }
-itertools = "0.13.0"
+itertools = "0.14.0"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 naming_special_names_rust = { version = "0.0.0", path = "../../../../../../naming" }
 newtype = { version = "0.0.0", path = "../../../../../../utils/newtype" }
diff --git a/hphp/hack/src/hackc/ir/passes/Cargo.toml b/hphp/hack/src/hackc/ir/passes/Cargo.toml
index 5f9438124819d..c9ee23f3f025f 100644
--- a/hphp/hack/src/hackc/ir/passes/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/passes/Cargo.toml
@@ -13,7 +13,7 @@ path = "lib.rs"
 [dependencies]
 analysis = { version = "0.0.0", path = "../analysis" }
 ir_core = { version = "0.0.0", path = "../ir_core" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 newtype = { version = "0.0.0", path = "../../../utils/newtype" }
 print = { version = "0.0.0", path = "../print" }
diff --git a/hphp/hack/src/hackc/ir/verify/Cargo.toml b/hphp/hack/src/hackc/ir/verify/Cargo.toml
index b9d8b609eab67..ac0074d091f2d 100644
--- a/hphp/hack/src/hackc/ir/verify/Cargo.toml
+++ b/hphp/hack/src/hackc/ir/verify/Cargo.toml
@@ -13,5 +13,5 @@ path = "lib.rs"
 [dependencies]
 analysis = { version = "0.0.0", path = "../analysis" }
 ir_core = { version = "0.0.0", path = "../ir_core" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 print = { version = "0.0.0", path = "../print" }
diff --git a/hphp/hack/src/hackc/sem_diff/Cargo.toml b/hphp/hack/src/hackc/sem_diff/Cargo.toml
index 31952e667bd2f..f2ee4d805efd3 100644
--- a/hphp/hack/src/hackc/sem_diff/Cargo.toml
+++ b/hphp/hack/src/hackc/sem_diff/Cargo.toml
@@ -18,6 +18,6 @@ ffi = { version = "0.0.0", path = "../ffi/ffi" }
 hash = { version = "0.0.0", path = "../../utils/hash" }
 hhbc = { version = "0.0.0", path = "../hhbc/cargo/hhbc" }
 hhbc-gen = { version = "0.0.0", path = "../../../../tools/hhbc-gen" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 log = { version = "0.4.22", features = ["kv_unstable"] }
 newtype = { version = "0.0.0", path = "../../utils/newtype" }
diff --git a/hphp/hack/src/hackrs/folded_decl_provider/cargo/folded_decl_provider/Cargo.toml b/hphp/hack/src/hackrs/folded_decl_provider/cargo/folded_decl_provider/Cargo.toml
index 15135f51fc61c..0df5f4012c0d3 100644
--- a/hphp/hack/src/hackrs/folded_decl_provider/cargo/folded_decl_provider/Cargo.toml
+++ b/hphp/hack/src/hackrs/folded_decl_provider/cargo/folded_decl_provider/Cargo.toml
@@ -17,7 +17,7 @@ decl_enforceability = { version = "0.0.0", path = "../../../decl_enforceability"
 eq_modulo_pos = { version = "0.0.0", path = "../../../../utils/eq_modulo_pos" }
 hash = { version = "0.0.0", path = "../../../../utils/hash" }
 indexmap = { version = "2.2.6", features = ["arbitrary", "rayon", "serde"] }
-itertools = "0.13.0"
+itertools = "0.14.0"
 oxidized = { version = "0.0.0", path = "../../../../oxidized" }
 pos = { version = "0.0.0", path = "../../../pos/cargo/pos" }
 shallow_decl_provider = { version = "0.0.0", path = "../../../shallow_decl_provider/cargo/shallow_decl_provider" }
diff --git a/hphp/hack/src/hackrs/hackrs_test/cargo/hackrs_test/Cargo.toml b/hphp/hack/src/hackrs/hackrs_test/cargo/hackrs_test/Cargo.toml
index d885d7630de16..e59b36c4d7761 100644
--- a/hphp/hack/src/hackrs/hackrs_test/cargo/hackrs_test/Cargo.toml
+++ b/hphp/hack/src/hackrs/hackrs_test/cargo/hackrs_test/Cargo.toml
@@ -19,7 +19,7 @@ file_provider = { version = "0.0.0", path = "../../../file_provider/cargo/file_p
 folded_decl_provider = { version = "0.0.0", path = "../../../folded_decl_provider/cargo/folded_decl_provider" }
 hackrs_test_utils = { version = "0.0.0", path = "../../../hackrs_test_utils/cargo/hackrs_test_utils" }
 hh24_test = { version = "0.0.0", path = "../../../../utils/cargo/hh24_test" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 maplit = "1.0"
 naming_provider = { version = "0.0.0", path = "../../../naming_provider/cargo/naming_provider" }
 ocamlrep = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
diff --git a/hphp/hack/src/hackrs/shallow_decl_provider/cargo/shallow_decl_provider/Cargo.toml b/hphp/hack/src/hackrs/shallow_decl_provider/cargo/shallow_decl_provider/Cargo.toml
index e9221e84e77d5..6ba0824f75908 100644
--- a/hphp/hack/src/hackrs/shallow_decl_provider/cargo/shallow_decl_provider/Cargo.toml
+++ b/hphp/hack/src/hackrs/shallow_decl_provider/cargo/shallow_decl_provider/Cargo.toml
@@ -14,7 +14,7 @@ path = "../../shallow_decl_provider.rs"
 anyhow = "1.0.86"
 datastore = { version = "0.0.0", path = "../../../datastore" }
 decl_parser = { version = "0.0.0", path = "../../../decl_parser/cargo/decl_parser" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 naming_provider = { version = "0.0.0", path = "../../../naming_provider/cargo/naming_provider" }
 oxidized = { version = "0.0.0", path = "../../../../oxidized" }
 pos = { version = "0.0.0", path = "../../../pos/cargo/pos" }
diff --git a/hphp/hack/src/oxidized/Cargo.toml b/hphp/hack/src/oxidized/Cargo.toml
index 67bcf52cc54fa..0bde934be9932 100644
--- a/hphp/hack/src/oxidized/Cargo.toml
+++ b/hphp/hack/src/oxidized/Cargo.toml
@@ -24,7 +24,7 @@ hash = { version = "0.0.0", path = "../utils/hash" }
 hh24_types = { version = "0.0.0", path = "../utils/hh24_types" }
 hh_autoimport_rust = { version = "0.0.0", path = "../parser/cargo/hh_autoimport" }
 hh_hash = { version = "0.0.0", path = "../utils/hh_hash" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 naming_types = { version = "0.0.0", path = "../naming/rust/naming_types" }
 no_pos_hash = { version = "0.0.0", path = "../utils/no_pos_hash" }
 ocamlrep = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
diff --git a/hphp/hack/src/parser/cargo/core_types/Cargo.toml b/hphp/hack/src/parser/cargo/core_types/Cargo.toml
index 5a66e141006d3..ad4de44e3f545 100644
--- a/hphp/hack/src/parser/cargo/core_types/Cargo.toml
+++ b/hphp/hack/src/parser/cargo/core_types/Cargo.toml
@@ -13,7 +13,7 @@ path = "../../parser_core_types_lib.rs"
 [dependencies]
 bitflags = { version = "2.6", features = ["serde"] }
 bumpalo = { version = "3.14.0", features = ["allocator_api", "collections"] }
-itertools = "0.13.0"
+itertools = "0.14.0"
 line_break_map = { version = "0.0.0", path = "../../../utils/line_break_map" }
 ocaml_helper = { version = "0.0.0", path = "../../../utils/ocaml_helper" }
 ocamlrep = { version = "0.1.0", git = "https://github.com/facebook/ocamlrep/", branch = "main" }
diff --git a/hphp/hack/src/parser/cargo/errors/Cargo.toml b/hphp/hack/src/parser/cargo/errors/Cargo.toml
index ed84b2c97c225..d3f4b774e6f01 100644
--- a/hphp/hack/src/parser/cargo/errors/Cargo.toml
+++ b/hphp/hack/src/parser/cargo/errors/Cargo.toml
@@ -16,7 +16,7 @@ doctest = false
 escaper = { version = "0.0.0", path = "../../../utils/escaper" }
 hash = { version = "0.0.0", path = "../../../utils/hash" }
 hh_autoimport_rust = { version = "0.0.0", path = "../hh_autoimport" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 naming_special_names_rust = { version = "0.0.0", path = "../../../naming" }
 oxidized = { version = "0.0.0", path = "../../../oxidized" }
 parser_core_types = { version = "0.0.0", path = "../core_types" }
diff --git a/hphp/hack/src/parser/lowerer/Cargo.toml b/hphp/hack/src/parser/lowerer/Cargo.toml
index f6e4f6f67571a..aee7564d54e1f 100644
--- a/hphp/hack/src/parser/lowerer/Cargo.toml
+++ b/hphp/hack/src/parser/lowerer/Cargo.toml
@@ -17,7 +17,7 @@ escaper = { version = "0.0.0", path = "../../utils/escaper" }
 hash = { version = "0.0.0", path = "../../utils/hash" }
 hhbc_string_utils = { version = "0.0.0", path = "../../hackc/utils/cargo/hhbc_string_utils" }
 html_entities = { version = "0.0.0", path = "../../utils/html_entities" }
-itertools = "0.13.0"
+itertools = "0.14.0"
 lazy_static = "1.4"
 lint_rust = { version = "0.0.0", path = "../../utils/lint" }
 naming_special_names_rust = { version = "0.0.0", path = "../../naming" }