diff --git a/.github/workflows/breakage.yml b/.github/workflows/breakage.yml
index 4bac2f0..22afcb2 100644
--- a/.github/workflows/breakage.yml
+++ b/.github/workflows/breakage.yml
@@ -46,7 +46,7 @@ jobs:
 
       # Cache artifacts (downloads)
       - name: Cache Julia artifacts
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/artifacts
           key: ${{ runner.os }}-breakage-${{ hashFiles('**/Project.toml') }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 69981ee..c2ea208 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,7 +88,7 @@ jobs:
 
       - name: Cache Julia artifacts (self-hosted runners)
         if: inputs.runner_type == 'self-hosted'
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         env:
           cache-name: cache-artifacts
         with:
@@ -101,7 +101,7 @@ jobs:
 
       - name: Cache Julia compiled code (self-hosted runners)
         if: inputs.runner_type == 'self-hosted'
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.depot.outputs.path }}/compiled
           key: ${{ runner.os }}-julia-compiled-${{ matrix.version }}-${{ hashFiles('**/Project.toml') }}
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index d403485..4681e8d 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -33,7 +33,7 @@ jobs:
 
       # 🧰 Cache des artefacts Julia (binaries téléchargés)
       - name: Cache Julia artifacts
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/artifacts
           key: ${{ runner.os }}-julia-artifacts-${{ hashFiles('**/Manifest.toml') }}
@@ -42,7 +42,7 @@ jobs:
 
       # ⚡ Cache du code précompilé (.ji)
       - name: Cache Julia compiled code
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/compiled
           key: ${{ runner.os }}-julia-compiled-${{ hashFiles('**/Manifest.toml') }}
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index c3b86f6..b742a13 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -51,7 +51,7 @@ jobs:
 
       # 🧰 Cache des artefacts (binaires des paquets)
       - name: Cache Julia artifacts
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/artifacts
           key: ${{ runner.os }}-julia-artifacts-${{ hashFiles('docs/Manifest.toml') }}
@@ -60,7 +60,7 @@ jobs:
 
       # ⚡ Cache du code précompilé (fichiers .ji)
       - name: Cache Julia compiled code
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/compiled
           key: ${{ runner.os }}-julia-compiled-${{ hashFiles('docs/Manifest.toml') }}
@@ -122,7 +122,7 @@ jobs:
           registry: control-toolbox/ct-registry
 
       - name: Cache Julia artifacts
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.depot.outputs.path }}/artifacts
           key: ${{ runner.os }}-gpu-docs-julia-artifacts-${{ hashFiles('docs/Manifest.toml') }}
@@ -130,7 +130,7 @@ jobs:
             ${{ runner.os }}-gpu-docs-julia-artifacts-
 
       - name: Cache Julia compiled code
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.depot.outputs.path }}/compiled
           key: ${{ runner.os }}-gpu-docs-julia-compiled-${{ hashFiles('docs/Manifest.toml') }}
diff --git a/.github/workflows/formatter.yml b/.github/workflows/formatter.yml
index 908d030..336a9e5 100644
--- a/.github/workflows/formatter.yml
+++ b/.github/workflows/formatter.yml
@@ -12,7 +12,7 @@ jobs:
 
       # 🧰 Cache Julia artifacts (binaries de JuliaFormatter et dépendances)
       - name: Cache Julia artifacts
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/artifacts
           key: ${{ runner.os }}-formatter-artifacts-${{ hashFiles('**/formatter.lock') }}
@@ -21,7 +21,7 @@ jobs:
 
       # ⚡ Cache du code précompilé (.ji)
       - name: Cache Julia compiled code
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.julia/compiled
           key: ${{ runner.os }}-formatter-compiled-${{ hashFiles('**/formatter.lock') }}