diff --git a/.gitmodules b/.gitmodules
index 4c9cc58..e4a23e7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,4 +13,4 @@
 [submodule "lib/risc0-ethereum"]
 	path = lib/risc0-ethereum
 	url = https://github.com/risc0/risc0-ethereum
-	branch = release-0.8
+	branch = release-0.9
diff --git a/Cargo.lock b/Cargo.lock
index d327abf..a3453d5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3141,8 +3141,8 @@ dependencies = [
 
 [[package]]
 name = "risc0-build-ethereum"
-version = "0.8.0"
-source = "git+https://github.com/risc0/risc0-ethereum?branch=release-0.8#667482a6fffef6b952c735842b4b555fb56865f8"
+version = "0.9.0"
+source = "git+https://github.com/risc0/risc0-ethereum?branch=release-0.9#a1bd9ecfcbd5264c888578b1abba3c6d8139c5ff"
 dependencies = [
  "anyhow",
  "hex",
@@ -3189,8 +3189,8 @@ dependencies = [
 
 [[package]]
 name = "risc0-ethereum-contracts"
-version = "0.8.0"
-source = "git+https://github.com/risc0/risc0-ethereum?branch=release-0.8#667482a6fffef6b952c735842b4b555fb56865f8"
+version = "0.9.0"
+source = "git+https://github.com/risc0/risc0-ethereum?branch=release-0.9#a1bd9ecfcbd5264c888578b1abba3c6d8139c5ff"
 dependencies = [
  "alloy-primitives",
  "alloy-sol-types",
diff --git a/lib/risc0-ethereum b/lib/risc0-ethereum
index 667482a..a1bd9ec 160000
--- a/lib/risc0-ethereum
+++ b/lib/risc0-ethereum
@@ -1 +1 @@
-Subproject commit 667482a6fffef6b952c735842b4b555fb56865f8
+Subproject commit a1bd9ecfcbd5264c888578b1abba3c6d8139c5ff