diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..fe96f50
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,50 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: ['1.25']
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: go test -v -race -coverprofile=coverage.out ./...
+
+      - name: Upload coverage
+        if: matrix.go-version == '1.25'
+        uses: codecov/codecov-action@v5
+        with:
+          files: coverage.out
+          fail_ci_if_error: false
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.25'
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v9
+        with:
+          version: latest
diff --git a/.golangci.yml b/.golangci.yml
new file mode 100644
index 0000000..1337d6b
--- /dev/null
+++ b/.golangci.yml
@@ -0,0 +1,4 @@
+version: "2"
+linters:
+  disable:
+    - unused
diff --git a/go.mod b/go.mod
index 7e5cd41..327c983 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module github.com/git-pkgs/spdx
 
-go 1.25.5
+go 1.25.6
 
 require github.com/github/go-spdx/v2 v2.3.6
diff --git a/parse_lax_test.go b/parse_lax_test.go
index 38afc7c..59614d1 100644
--- a/parse_lax_test.go
+++ b/parse_lax_test.go
@@ -142,7 +142,7 @@ func BenchmarkParseLax(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		for _, expr := range expressions {
-			ParseLax(expr)
+			_, _ = ParseLax(expr)
 		}
 	}
 }
diff --git a/real_world_test.go b/real_world_test.go
index 07c6057..81f26c1 100644
--- a/real_world_test.go
+++ b/real_world_test.go
@@ -297,7 +297,7 @@ func BenchmarkRealWorldNormalization(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		for _, input := range inputs {
 			// Try ParseLax on everything
-			ParseLax(input)
+			_, _ = ParseLax(input)
 		}
 	}
 }
diff --git a/spdx_test.go b/spdx_test.go
index 4464dfd..0d116d7 100644
--- a/spdx_test.go
+++ b/spdx_test.go
@@ -441,7 +441,7 @@ func BenchmarkNormalize(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		for _, input := range inputs {
-			Normalize(input)
+			_, _ = Normalize(input)
 		}
 	}
 }
@@ -460,7 +460,7 @@ func BenchmarkNormalizeBatch(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		for _, input := range inputs {
-			Normalize(input)
+			_, _ = Normalize(input)
 		}
 	}
 }
@@ -476,7 +476,7 @@ func BenchmarkParse(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		for _, expr := range expressions {
-			Parse(expr)
+			_, _ = Parse(expr)
 		}
 	}
 }