diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3413400..0059ff1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,7 +51,7 @@ jobs:
           components: rustfmt, clippy
           
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -65,7 +65,7 @@ jobs:
             ${{ runner.os }}-cargo-
             
       - name: Cache Bun dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.bun/install/cache
           key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb', '**/package.json') }}
@@ -141,7 +141,7 @@ jobs:
           targets: wasm32-unknown-unknown
           
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -194,7 +194,7 @@ jobs:
           fi
           
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -227,7 +227,7 @@ jobs:
         uses: dtolnay/rust-toolchain@1.70.0  # Adjust based on actual MSRV
         
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -259,7 +259,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
         
       - name: Cache Cargo dependencies and tools
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -300,7 +300,7 @@ jobs:
           components: llvm-tools-preview
           
       - name: Cache Cargo dependencies and tools
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -347,7 +347,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
         
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -365,7 +365,7 @@ jobs:
         run: sudo apt-get update && sudo apt-get install -y bc jq
         
       - name: Cache benchmark results
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: benchmark-results/
           key: ${{ runner.os }}-benchmarks-${{ github.base_ref || github.ref_name }}
@@ -468,7 +468,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
         
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
diff --git a/.github/workflows/deploy-worker.yml b/.github/workflows/deploy-worker.yml
index 629e035..1c478fd 100644
--- a/.github/workflows/deploy-worker.yml
+++ b/.github/workflows/deploy-worker.yml
@@ -42,7 +42,7 @@ jobs:
           bun-version: latest
           
       - name: Cache Bun global packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.bun/install/global
           key: ${{ runner.os }}-bun-global-wrangler
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index cf444da..e8a81a7 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -43,7 +43,7 @@ jobs:
           components: rustfmt, clippy
           
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -58,7 +58,7 @@ jobs:
             ${{ runner.os }}-cargo-
             
       - name: Cache Bun dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.bun/install/cache
           key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb', '**/package.json') }}
@@ -142,7 +142,7 @@ jobs:
           EOF
           
       - name: Cache npm global packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.npm
           key: ${{ runner.os }}-npm-global-${{ hashFiles('**/package.json') }}
diff --git a/.github/workflows/netlify-deploy.yml b/.github/workflows/netlify-deploy.yml
index a362bf4..50d02d3 100644
--- a/.github/workflows/netlify-deploy.yml
+++ b/.github/workflows/netlify-deploy.yml
@@ -31,7 +31,7 @@ jobs:
           components: rustfmt, clippy
           
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0d26818..24b36cc 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -127,7 +127,7 @@ jobs:
           targets: ${{ matrix.target }}
           
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -144,7 +144,7 @@ jobs:
           
       - name: Cache cross-compilation tool
         if: matrix.cross
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cargo/bin/cross
           key: ${{ runner.os }}-cross-${{ hashFiles('~/.cargo/bin/cross') }}
@@ -261,7 +261,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
         
       - name: Cache Cargo dependencies and tools
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/
@@ -368,7 +368,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
         
       - name: Cache Cargo dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ~/.cargo/bin/