diff --git a/crates/uv-cache/src/lib.rs b/crates/uv-cache/src/lib.rs
index 9ab8ec315..c8b694742 100644
--- a/crates/uv-cache/src/lib.rs
+++ b/crates/uv-cache/src/lib.rs
@@ -598,7 +598,7 @@ impl CacheBucket {
             Self::FlatIndex => "flat-index-v0",
             Self::Git => "git-v0",
             Self::Interpreter => "interpreter-v0",
-            Self::Simple => "simple-v5",
+            Self::Simple => "simple-v6",
             Self::Wheels => "wheels-v0",
             Self::Archive => "archive-v0",
         }