diff --git a/internal/oidc/validator.go b/internal/oidc/validator.go
index 6c3862b..c4cd301 100644
--- a/internal/oidc/validator.go
+++ b/internal/oidc/validator.go
@@ -159,7 +159,7 @@ func (v *Validator) ValidateToken(tokenString string) (*Claims, error) {
 	return &claims, nil
 }
 
-func (v *Validator) keyFunc(token *jwt.Token) (interface{}, error) {
+func (v *Validator) keyFunc(token *jwt.Token) (any, error) {
 	// Ensure the signing method is RSA
 	if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
 		return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
diff --git a/internal/oidc/validator_test.go b/internal/oidc/validator_test.go
index b52a3cd..de98f45 100644
--- a/internal/oidc/validator_test.go
+++ b/internal/oidc/validator_test.go
@@ -35,8 +35,8 @@ func serveJWKS(t *testing.T, key *rsa.PrivateKey, kid string) *httptest.Server {
 	nBytes := key.PublicKey.N.Bytes()
 	eBytes := big.NewInt(int64(key.PublicKey.E)).Bytes()
 
-	jwks := map[string]interface{}{
-		"keys": []map[string]interface{}{
+	jwks := map[string]any{
+		"keys": []map[string]any{
 			{
 				"kty": "RSA",
 				"kid": kid,
diff --git a/internal/web/server_test.go b/internal/web/server_test.go
index c1969ff..54258a7 100644
--- a/internal/web/server_test.go
+++ b/internal/web/server_test.go
@@ -42,8 +42,8 @@ func serveJWKS(t *testing.T, key *rsa.PrivateKey, kid string) *httptest.Server {
 	nBytes := key.PublicKey.N.Bytes()
 	eBytes := big.NewInt(int64(key.PublicKey.E)).Bytes()
 
-	jwks := map[string]interface{}{
-		"keys": []map[string]interface{}{
+	jwks := map[string]any{
+		"keys": []map[string]any{
 			{
 				"kty": "RSA",
 				"kid": kid,