diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 88e3d2c..28f209a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
         toolchain: ${{ matrix.rust }}
         
     - name: Cache cargo registry
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~/.cargo/registry
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 28f47fe..5fe9931 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -26,7 +26,7 @@ jobs:
       uses: dtolnay/rust-toolchain@stable
       
     - name: Cache cargo registry
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~/.cargo/registry
diff --git a/.github/workflows/production-ready.yml b/.github/workflows/production-ready.yml
index b58413f..663387b 100644
--- a/.github/workflows/production-ready.yml
+++ b/.github/workflows/production-ready.yml
@@ -30,7 +30,7 @@ jobs:
         toolchain: ${{ matrix.rust }}
         
     - name: Cache cargo registry
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~/.cargo/registry
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 00a158b..7440463 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -30,7 +30,7 @@ jobs:
       uses: dtolnay/rust-toolchain@stable
       
     - name: Cache cargo registry
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~/.cargo/registry
@@ -62,7 +62,7 @@ jobs:
       uses: dtolnay/rust-toolchain@stable
       
     - name: Cache cargo registry
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           ~/.cargo/registry