diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 31922c2..e3f923b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -76,7 +76,7 @@ jobs:
             .tmp/ci-shell-safe/npm \
             .tmp/ci-shell-safe/pip \
             .tmp/ci-shell-safe/terraform
-      - uses: actions/cache@v5
+      - uses: actions/cache@v6
         with:
           path: |
             .tmp/ci-shell-safe/npm
diff --git a/test/workflow.test.ts b/test/workflow.test.ts
index 5699678..2e6c2f7 100644
--- a/test/workflow.test.ts
+++ b/test/workflow.test.ts
@@ -177,7 +177,7 @@ describe("CI workflow", () => {
 
     const contractJob = workflow.jobs.shell_safe_contract_trusted;
     const steps = contractJob.steps as Array<Record<string, unknown>>;
-    const cacheStep = steps.find((step) => step.uses === "actions/cache@v5");
+    const cacheStep = steps.find((step) => step.uses === "actions/cache@v6");
     const verifyToolchainStep = steps.find(
       (step) => step.name === "Verify built-in shell-safe toolchain"
     );