diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6ba9bd65..296f6f3f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -115,7 +115,7 @@ jobs:
         run: python3 -m unittest discover -s tests/ci -v
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Check repository TypeScript tooling
         run: mise run tools:typecheck
@@ -131,7 +131,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Install Rust components
         run: rustup component add rustfmt clippy
@@ -175,7 +175,7 @@ jobs:
       - name: Enable long Git dependency paths on Windows
         run: git config --global core.longpaths true
       - name: Install Rust through mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
         with:
@@ -235,7 +235,7 @@ jobs:
         run: git config --global core.longpaths true
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -312,7 +312,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Lint shell scripts
         run: mise run check:lint:shell
@@ -328,7 +328,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Lint YAML files
         run: mise run check:lint:yaml
@@ -344,7 +344,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
         with:
           install: false
 
@@ -376,7 +376,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Install Rust components
         run: rustup component add clippy
@@ -412,7 +412,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -446,7 +446,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Install WASM target
         run: rustup target add wasm32-unknown-unknown
@@ -485,7 +485,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Install WASM target
         run: rustup target add wasm32-unknown-unknown
@@ -517,7 +517,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -540,7 +540,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -563,7 +563,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -589,7 +589,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -612,7 +612,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
@@ -645,7 +645,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
diff --git a/.github/workflows/publish-crate.yml b/.github/workflows/publish-crate.yml
index b539a45a..35bf4e7a 100644
--- a/.github/workflows/publish-crate.yml
+++ b/.github/workflows/publish-crate.yml
@@ -78,7 +78,7 @@ jobs:
           ref: ${{ needs.resolve.outputs.commit }}
 
       - name: Install mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Dry-run publish
         env:
diff --git a/.github/workflows/release-provider-snapshot.yml b/.github/workflows/release-provider-snapshot.yml
index cec7fbcb..d5dddd3f 100644
--- a/.github/workflows/release-provider-snapshot.yml
+++ b/.github/workflows/release-provider-snapshot.yml
@@ -33,7 +33,7 @@ env:
 jobs:
   resolve:
     name: Resolve provider snapshot tag
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 10
     outputs:
       tag: ${{ steps.release.outputs.tag }}
@@ -95,7 +95,7 @@ jobs:
 
       # No dependency cache: release executables are built from a clean target.
       - name: Install Rust through mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Build release executables
         run: |
@@ -160,7 +160,7 @@ jobs:
   publish:
     name: Publish provider snapshot release
     needs: [resolve, build]
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 20
     permissions:
       contents: write
@@ -278,7 +278,7 @@ jobs:
           python-version: "3.12"
 
       - name: Install Rust through mise
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Download published assets
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 50465908..2860048c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -69,7 +69,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install mise tools
-        uses: jdx/mise-action@v4
+        uses: jdx/mise-action@v5
 
       - name: Install WASM target
         run: rustup target add wasm32-unknown-unknown