diff --git a/.github/workflows/add-lang.yml b/.github/workflows/add-lang.yml
index f12f152d6..0a9a12f11 100644
--- a/.github/workflows/add-lang.yml
+++ b/.github/workflows/add-lang.yml
@@ -48,7 +48,7 @@ jobs:
         id: cache-po4a
         with:
           path: "~/po4a"
-          key: ${{ runner.os }}-po4a-key
+          key: ${{ runner.os }}-po4a-0.68
       - name: Install/retrieve po4a from cache
         env:
           CACHE_HIT: ${{ steps.cache-po4a.outputs.cache-hit }}
diff --git a/.github/workflows/jekyll.yml b/.github/workflows/jekyll.yml
index 6d1aae21c..d0ac3092e 100644
--- a/.github/workflows/jekyll.yml
+++ b/.github/workflows/jekyll.yml
@@ -29,7 +29,7 @@ jobs:
         id: cache-po4a
         with:
           path: "~/po4a"
-          key: ${{ runner.os }}-po4a-key
+          key: ${{ runner.os }}-po4a-0.68
       - name: Install or retrieve po4a from cache
         env:
           CACHE_HIT: ${{steps.cache-po4a.outputs.cache-hit}}
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d08559255..529de20ff 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,7 +17,7 @@ jobs:
         id: cache-po4a
         with:
           path: "~/po4a"
-          key: ${{ runner.os }}-po4a-key
+          key: ${{ runner.os }}-po4a-0.68
       - name: Install or retrieve po4a from cache
         env:
           CACHE_HIT: ${{steps.cache-po4a.outputs.cache-hit}}