diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d96a0a6..46fa266 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -213,7 +213,7 @@ jobs:
           key: itch-replay-smoke
 
       - name: Cache ITCH data
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: examples/itch-replay/data
           key: itch-data-${{ hashFiles('examples/itch-replay/expected/sample.md5') }}
@@ -284,7 +284,7 @@ jobs:
           key: momentum-backtest-smoke
 
       - name: Cache price data
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: examples/momentum-backtest/data
           key: price-data-${{ hashFiles('examples/momentum-backtest/data/prices.md5') }}
diff --git a/.github/workflows/oracle.yml b/.github/workflows/oracle.yml
index 03eaaf8..69764bf 100644
--- a/.github/workflows/oracle.yml
+++ b/.github/workflows/oracle.yml
@@ -21,7 +21,7 @@ jobs:
           ocaml-compiler: 5.4
       
       - name: Cache opam
-        uses: actions/cache@6f8efc29b200d32929f49075959781ed54ec270c # v3.5.0
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: ~/.opam
           key: ${{ runner.os }}-opam-${{ hashFiles('**/oracle-ocaml/dune-project') }}
@@ -42,7 +42,7 @@ jobs:
           toolchain: stable
       
       - name: Cache Rust
-        uses: actions/cache@6f8efc29b200d32929f49075959781ed54ec270c # v3.5.0
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: ~/.cargo
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}