diff --git a/.github/workflows/soroban.yml b/.github/workflows/soroban.yml
index 0cf262d7..e267ddc5 100644
--- a/.github/workflows/soroban.yml
+++ b/.github/workflows/soroban.yml
@@ -49,7 +49,7 @@ jobs:
           components: rustfmt
 
       - name: Cache Cargo registry & build artifacts
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry/index/
@@ -82,7 +82,7 @@ jobs:
           components: clippy
 
       - name: Cache Cargo registry & build artifacts
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry/index/
@@ -134,7 +134,7 @@ jobs:
           targets: wasm32-unknown-unknown
 
       - name: Cache Cargo registry & build artifacts
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry/index/
diff --git a/.github/workflows/soroban_fuzz.yml b/.github/workflows/soroban_fuzz.yml
index 2f65ceff..3b414305 100644
--- a/.github/workflows/soroban_fuzz.yml
+++ b/.github/workflows/soroban_fuzz.yml
@@ -45,7 +45,7 @@ jobs:
         uses: dtolnay/rust-toolchain@nightly
 
       - name: Cache Cargo registry
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry/index/
@@ -112,7 +112,7 @@ jobs:
         uses: dtolnay/rust-toolchain@nightly
 
       - name: Cache Cargo registry
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry/index/
@@ -179,7 +179,7 @@ jobs:
         uses: dtolnay/rust-toolchain@nightly
 
       - name: Cache Cargo registry
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cargo/registry/index/