diff --git a/.github/workflows/build-gossamer-gui.yml b/.github/workflows/build-gossamer-gui.yml
index b124d987..9ec537cb 100644
--- a/.github/workflows/build-gossamer-gui.yml
+++ b/.github/workflows/build-gossamer-gui.yml
@@ -153,7 +153,7 @@ jobs:
 
       - name: Cache Ephapax build
         id: cache-ephapax
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: |
             /tmp/ephapax
diff --git a/.github/workflows/estate-rescan.yml b/.github/workflows/estate-rescan.yml
index f21989dc..44b618a3 100644
--- a/.github/workflows/estate-rescan.yml
+++ b/.github/workflows/estate-rescan.yml
@@ -74,7 +74,7 @@ jobs:
 
       - name: Cache built panic-attack
         id: pa_cache
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/panic-attack-bin
           # Exact-SHA key, no restore-keys: a partial hit would scan with
diff --git a/.github/workflows/merge-orchestrate.yml b/.github/workflows/merge-orchestrate.yml
index 825f1604..bf626e87 100644
--- a/.github/workflows/merge-orchestrate.yml
+++ b/.github/workflows/merge-orchestrate.yml
@@ -44,7 +44,7 @@ jobs:
           elixir-version: '1.17'
 
       - name: Restore Mix cache
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8  # v4
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9  # v4
         with:
           path: |
             deps
diff --git a/.github/workflows/security-policy.yml b/.github/workflows/security-policy.yml
index 0239399c..088310e3 100644
--- a/.github/workflows/security-policy.yml
+++ b/.github/workflows/security-policy.yml
@@ -382,7 +382,7 @@ jobs:
           toolchain: stable
 
       - name: Cache cargo registry
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: |
             ~/.cargo/registry
@@ -509,7 +509,7 @@ jobs:
           cabal-update: true
 
       - name: Cache Cabal dependencies
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: |
             ~/.cabal/packages
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1084338f..d585a226 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -38,7 +38,7 @@ jobs:
           elixir-version: '1.17'
 
       - name: Restore Mix cache
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8  # v4
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9  # v4
         with:
           path: |
             deps
diff --git a/.github/workflows/verify-proofs.yml b/.github/workflows/verify-proofs.yml
index 38c0bbcb..c558ad1d 100644
--- a/.github/workflows/verify-proofs.yml
+++ b/.github/workflows/verify-proofs.yml
@@ -67,7 +67,7 @@ jobs:
 
       - name: Cache Idris 2 install
         id: cache-idris
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: |
             /usr/local/bin/idris2
@@ -158,7 +158,7 @@ jobs:
 
       - name: Cache Lean toolchain and build
         id: cache-lean
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: |
             ~/.elan
@@ -218,7 +218,7 @@ jobs:
 
       - name: Cache tla2tools.jar
         id: cache-tla
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ~/.local/share/tla2tools.jar
           key: tla2tools-v1.8.0