diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index 25f19276cd7..a8c61ede3a7 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -53,7 +53,7 @@ env:
   RUST_BACKTRACE: 1
   SHELL: /bin/bash
   # Increment this to purge the cache (https://github.com/mozilla/sccache/blob/main/docs/GHA.md)
-  SCCACHE_GHA_VERSION: 3
+  SCCACHE_GHA_VERSION: 4
   SCCACHE_GHA_ENABLED: "true"
   RUSTC_WRAPPER: "sccache"
   CCACHE: "sccache"