diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d85c508..0161e01 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -48,6 +48,16 @@ jobs:
       - uses: jdx/mise-action@v3
         name: Install mise
 
+      - name: Cache Go modules and build
+        uses: actions/cache@v5
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Run tests
         run: mise tasks run covtest
 
@@ -69,6 +79,16 @@ jobs:
       - uses: jdx/mise-action@v3
         name: Install mise
 
+      - name: Cache Go modules and build
+        uses: actions/cache@v5
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Run fuzzing
         run: mise tasks run 'test:fuzz:*'
 
@@ -86,6 +106,16 @@ jobs:
       - uses: jdx/mise-action@v3
         name: Install mise
 
+      - name: Cache Go modules and build
+        uses: actions/cache@v5
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Run linter
         run: mise tasks run lint
 
@@ -123,14 +153,6 @@ jobs:
       - name: Setup BuildX
         uses: docker/setup-buildx-action@v3
 
-      - name: Setup cache
-        uses: actions/cache@v5
-        with:
-          path: /tmp/buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-
-
       - name: Login to DockerHub
         if: github.event_name != 'pull_request'
         uses: docker/login-action@v3
@@ -147,7 +169,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v6
         with:
           pull: true
           context: .
@@ -155,5 +177,5 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=local,src=/tmp/buildx-cache
-          cache-to: type=local,dest=/tmp/buildx-cache
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
diff --git a/.mise.toml b/.mise.toml
index c5bdf73..e49496c 100644
--- a/.mise.toml
+++ b/.mise.toml
@@ -33,11 +33,11 @@ run = "govulncheck ./..."
 
 [tasks.test]
 description = "Run tests"
-run = "go test -v ./..."
+run = "go test -v -race ./..."
 
 [tasks.covtest]
 description = "Run tests with code coverage"
-run = "go test -coverprofile=coverage.txt -covermode=atomic -parallel 2 -race -v ./..."
+run = "go test -coverprofile=coverage.txt -covermode=atomic -count=2 -race -v ./..."
 
 [tasks.test-all]
 description = "Run all tests"
diff --git a/Dockerfile b/Dockerfile
index 43d996b..fdb4b56 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,14 +5,19 @@ FROM golang:1.26-alpine AS build
 
 ENV CGO_ENABLED=0
 
-RUN set -x \
-  && apk --no-cache --update add \
-    bash \
-    ca-certificates \
-    git
+RUN --mount=type=cache,target=/var/cache/apk \
+    set -x \
+    && apk --update add \
+      bash \
+      ca-certificates \
+      git
+
+COPY go.mod go.sum /app/
+WORKDIR /app
+
+RUN go mod download
 
 COPY . /app
-WORKDIR /app
 
 RUN set -x \
   && version="$(git describe --exact-match HEAD 2>/dev/null || git describe --tags --always)" \