diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c0c78ec31c..035ad08fc2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Cache pip
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/requirements.txt') }}
@@ -31,7 +31,7 @@ jobs:
             ${{ runner.os }}-pip-${{ matrix.python-version }}-
           
       - name: Cache virtualenv
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: .venv
           key: ${{ runner.os }}-venv-${{ matrix.python-version }}-${{ github.run_id }}
diff --git a/.github/workflows/prompt_smoke_ci.yml b/.github/workflows/prompt_smoke_ci.yml
index fcef7a5a0e..5a0ec65b53 100644
--- a/.github/workflows/prompt_smoke_ci.yml
+++ b/.github/workflows/prompt_smoke_ci.yml
@@ -34,7 +34,7 @@ jobs:
         with:
           python-version: '3.11'
       - name: Cache pip
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('ci-requirements.txt') }}
@@ -65,7 +65,7 @@ jobs:
         with:
           python-version: '3.11'
       - name: Cache pip
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-full-${{ hashFiles('ci-requirements.txt') }}
diff --git a/.github/workflows/release-artifacts.yml b/.github/workflows/release-artifacts.yml
index 7dbff00dd5..917e6154d8 100644
--- a/.github/workflows/release-artifacts.yml
+++ b/.github/workflows/release-artifacts.yml
@@ -66,7 +66,7 @@ jobs:
           install: true
 
       - name: Set up docker layer caching
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6e83b8240f..a9af06dd07 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -165,7 +165,7 @@ jobs:
       # Cribbed from
       # https://github.com/AustinScola/mypy-cache-github-action/blob/85ea4f2972abed39b33bd02c36e341b28ca59213/src/restore.ts#L10-L17
       - name: Restore/persist mypy's cache
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: |
             .mypy_cache