diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d736828..6905123 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,6 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
+        go: [1.18, 1.19]
       fail-fast: false
 
     steps:
@@ -17,12 +18,12 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.1
+        go-version: ${{ matrix.go }}
 
     - name: Setup gotestsum
       uses: autero1/action-gotestsum@v1.0.0
       with:
-        gotestsum_version: 1.7.0
+        gotestsum_version: 1.8.1
 
     - name: Test
       run: gotestsum --format short-verbose -- -race -timeout=20m -coverprofile=coverage_txt -covermode=atomic ./...
diff --git a/.golangci.yml b/.golangci.yml
index 449a43c..4e1fc0c 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -44,3 +44,5 @@ linters:
     - cyclop
     - errname
     - varnamelen
+    - exhaustruct
+    - maintidx
diff --git a/api.go b/api.go
index 854d6ee..77f1f92 100644
--- a/api.go
+++ b/api.go
@@ -99,6 +99,7 @@ func (m MethodNotAllowedError) MarshalJSON() ([]byte, error) {
 }
 
 func errorAsJSON(err Error) []byte {
+	//nolint:errchkjson
 	b, _ := json.Marshal(struct {
 		Code    int32  `json:"code"`
 		Message string `json:"message"`
@@ -146,7 +147,7 @@ func ServeError(rw http.ResponseWriter, r *http.Request, err error) {
 			ServeError(rw, r, nil)
 		}
 	case *MethodNotAllowedError:
-		rw.Header().Add("Allow", strings.Join(err.(*MethodNotAllowedError).Allowed, ","))
+		rw.Header().Add("Allow", strings.Join(e.Allowed, ","))
 		rw.WriteHeader(asHTTPCode(int(e.Code())))
 		if r == nil || r.Method != http.MethodHead {
 			_, _ = rw.Write(errorAsJSON(e))
diff --git a/doc.go b/doc.go
index 963d427..af01190 100644
--- a/doc.go
+++ b/doc.go
@@ -13,7 +13,6 @@
 // limitations under the License.
 
 /*
-
 Package errors provides an Error interface and several concrete types
 implementing this interface to manage API errors and JSON-schema validation
 errors.
@@ -23,6 +22,5 @@ it defines.
 
 It is used throughout the various go-openapi toolkit libraries
 (https://github.com/go-openapi).
-
 */
 package errors
diff --git a/middleware.go b/middleware.go
index c26ad48..963472d 100644
--- a/middleware.go
+++ b/middleware.go
@@ -28,7 +28,6 @@ type APIVerificationFailed struct {
 	MissingRegistration  []string `json:"missingRegistration,omitempty"`
 }
 
-//
 func (v *APIVerificationFailed) Error() string {
 	buf := bytes.NewBuffer(nil)