diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f6e2f9e..4b667c7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -29,7 +29,7 @@ jobs:
 
     # Cache dependencies. From:
     # https://github.com/actions/cache/blob/master/examples.md#python---pip
-    - uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4
+    - uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}