diff --git a/Cargo.lock b/Cargo.lock
index 501bae7..6f9ca70 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,12 @@ version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4361135be9122e0870de935d7c439aef945b9f9ddd4199a553b5270b49c82a27"
 
+[[package]]
+name = "base64"
+version = "0.21.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35636a1494ede3b646cc98f74f8e62c773a38a659ebc777a2cf26b9b74171df9"
+
 [[package]]
 name = "bincode"
 version = "1.3.3"
@@ -37,6 +43,7 @@ name = "bkt"
 version = "0.7.1"
 dependencies = [
  "anyhow",
+ "base64",
  "bincode",
  "clap",
  "filetime",
diff --git a/Cargo.toml b/Cargo.toml
index f74eadb..d929d8d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,6 +28,7 @@ bincode = "1.3.1"
 humantime = "2.1.0"
 rand = "0.8"
 serde = { version = "1.0", features = ["derive"] }
+base64 = "0.21.5"
 
 [dependencies.clap]
 version = "4.2"
diff --git a/src/lib.rs b/src/lib.rs
index b7fc504..dd49381 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -28,6 +28,9 @@ use anyhow::{anyhow, Context, Error, Result};
 use serde::{Serialize, Deserialize};
 use serde::de::DeserializeOwned;
 
+use base64::{Engine as _, engine::general_purpose};
+
+
 #[cfg(feature="debug")]
 macro_rules! debug_msg {
     ($($arg:tt)*) => { eprintln!("bkt: {}", format!($($arg)*)) }
@@ -661,7 +664,7 @@ impl Cache {
 
     fn key_path(&self, key: &str) -> PathBuf {
         let file = match &self.scope {
-            Some(scope) => format!("{}.{}", scope, key),
+            Some(scope) => format!("{}.{}", general_purpose::STANDARD_NO_PAD.encode(scope), key),
             None => key.into(),
         };
         self.key_dir().join(file)
@@ -931,6 +934,24 @@ mod cache_tests {
         assert_eq!(present_scoped.unwrap().0, val_b);
     }
 
+    #[test]
+    fn scopes_support_special_chars() {
+        let dir = TestDir::temp();
+        let key = "foo".to_string();
+        let val_a = "A".to_string();
+        let val_b = "B".to_string();
+        let cache = Cache::new(dir.root());
+        let cache_scoped = Cache::new(dir.root()).scoped("/scope/with/path/separators".into());
+
+        cache.store(&key, &val_a, Duration::from_secs(100)).unwrap();
+        cache_scoped.store(&key, &val_b, Duration::from_secs(100)).unwrap();
+
+        let present = cache.lookup::<_, String>(&key, Duration::from_secs(20)).unwrap();
+        assert_eq!(present.unwrap().0, val_a);
+        let present_scoped = cache_scoped.lookup::<_, String>(&key, Duration::from_secs(20)).unwrap();
+        assert_eq!(present_scoped.unwrap().0, val_b);
+    }
+
     #[test]
     fn cleanup() {
         let dir = TestDir::temp();