diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index 5af2493..ebee0c2 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -14,6 +14,25 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Restore tool cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin
+            ~/.cargo/registry
+            ~/.cargo/git
+            ~/.rustup
+            ~/.local/bin/mise
+            ~/.local/share/mise
+          key: tools-check-${{ hashFiles('scripts/ci-setup.sh', 'mise.toml') }}
+      - name: Restore build cache
+        uses: actions/cache@v4
+        with:
+          path: src-tauri/target
+          key: target-check-${{ hashFiles('src-tauri/Cargo.lock') }}-${{ github.sha }}
+          restore-keys: |
+            target-check-${{ hashFiles('src-tauri/Cargo.lock') }}-
+            target-check-
       - name: Install tools
         run: scripts/ci-setup.sh
       - name: Unit tests
diff --git a/.gitea/workflows/release.yaml b/.gitea/workflows/release.yaml
index 92ba27b..bdd3e93 100644
--- a/.gitea/workflows/release.yaml
+++ b/.gitea/workflows/release.yaml
@@ -24,6 +24,27 @@ jobs:
       CARGO_BUILD_JOBS: "2"
     steps:
       - uses: actions/checkout@v4
+      - name: Restore tool cache
+        uses: actions/cache@v4
+        with:
+          # ~/.cache/cargo-xwin holds the Windows SDK files cargo-xwin downloads.
+          path: |
+            ~/.cargo/bin
+            ~/.cargo/registry
+            ~/.cargo/git
+            ~/.rustup
+            ~/.local/bin/mise
+            ~/.local/share/mise
+            ~/.cache/cargo-xwin
+          key: tools-release-${{ hashFiles('scripts/ci-setup.sh', 'mise.toml') }}
+      - name: Restore build cache
+        uses: actions/cache@v4
+        with:
+          path: src-tauri/target
+          key: target-release-${{ hashFiles('src-tauri/Cargo.lock') }}-${{ github.sha }}
+          restore-keys: |
+            target-release-${{ hashFiles('src-tauri/Cargo.lock') }}-
+            target-release-
       - name: Install tools
         run: scripts/ci-setup.sh --windows
       - name: Take the version from the tag
diff --git a/scripts/ci-setup.sh b/scripts/ci-setup.sh
index 4021439..49d8ff9 100755
--- a/scripts/ci-setup.sh
+++ b/scripts/ci-setup.sh
@@ -16,6 +16,9 @@ fi
 $SUDO apt-get update -q
 $SUDO apt-get install -yq --no-install-recommends "${packages[@]}"
 
+# Rust, cargo-xwin and mise may already be here from the CI cache.
+export PATH="$HOME/.cargo/bin:$HOME/.local/bin:$PATH"
+
 # Rust: not pinned in mise.toml, because mise needs rustup for it.
 if ! command -v cargo >/dev/null; then
   curl -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal
@@ -25,10 +28,10 @@ export PATH="$HOME/.cargo/bin:$PATH"
 
 if [[ "${1:-}" == "--windows" ]]; then
   rustup target add x86_64-pc-windows-msvc
-  cargo install --locked cargo-xwin
+  command -v cargo-xwin >/dev/null || cargo install --locked cargo-xwin
 fi
 
-curl -fsSL https://mise.run | MISE_VERSION=v2026.9.1 sh
+command -v mise >/dev/null || curl -fsSL https://mise.run | MISE_VERSION=v2026.9.1 sh
 echo "$HOME/.local/bin" >> "$GITHUB_PATH"
 echo "$HOME/.local/share/mise/shims" >> "$GITHUB_PATH"
 export PATH="$HOME/.local/bin:$HOME/.local/share/mise/shims:$PATH"