diff --git a/.github/workflows/nightly-against-main.yml b/.github/workflows/nightly-against-main.yml
index 5388586..6261536 100644
--- a/.github/workflows/nightly-against-main.yml
+++ b/.github/workflows/nightly-against-main.yml
@@ -31,7 +31,7 @@ jobs:
           python-version: "3.12"
 
       - name: Cache test blocks and plots
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         env:
           SEGMENT_DOWNLOAD_TIMEOUT_MIN: 1
         id: test-blocks-plots
diff --git a/.github/workflows/run-test-suite.yml b/.github/workflows/run-test-suite.yml
index 838b34b..2ffc686 100644
--- a/.github/workflows/run-test-suite.yml
+++ b/.github/workflows/run-test-suite.yml
@@ -40,7 +40,7 @@ jobs:
           python-version: 3.12
 
       - name: Cache test blocks and plots
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         env:
           SEGMENT_DOWNLOAD_TIMEOUT_MIN: 1
         id: test-blocks-plots