diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index a46624310..d893f761b 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -30,6 +30,18 @@ jobs:
             **/build/test-results/test/TEST-*.xml
             **/build/test-results/testWithJava11/TEST-*.xml
             **/build/test-results/testWithJava17/TEST-*.xml
+  javadoc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: gradle/actions/wrapper-validation@v5
+      - name: Set up JDK 21
+        uses: actions/setup-java@v5
+        with:
+          java-version: '21'
+          distribution: 'corretto'
+      - name: Verify Javadoc
+        run: ./gradlew javadoc --info --stacktrace
   publishToMavenCentral:
     needs: buildAndTest
     runs-on: ubuntu-latest
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 9e4a427b3..f57a62ef7 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -39,3 +39,15 @@ jobs:
             **/build/test-results/test/TEST-*.xml
             **/build/test-results/testWithJava11/TEST-*.xml
             **/build/test-results/testWithJava17/TEST-*.xml
+  javadoc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: gradle/actions/wrapper-validation@v5
+      - name: Set up JDK 21
+        uses: actions/setup-java@v5
+        with:
+          java-version: '21'
+          distribution: 'corretto'
+      - name: Verify Javadoc
+        run: ./gradlew javadoc --info --stacktrace
diff --git a/src/main/java/graphql/schema/GraphQLSchema.java b/src/main/java/graphql/schema/GraphQLSchema.java
index a53f58165..da7a2ccde 100644
--- a/src/main/java/graphql/schema/GraphQLSchema.java
+++ b/src/main/java/graphql/schema/GraphQLSchema.java
@@ -227,7 +227,7 @@ public GraphQLObjectType getIntrospectionSchemaType() {
      *     <li>Root operation types (Query, Mutation, Subscription)</li>
      *     <li>Directive argument types</li>
      *     <li>Introspection types</li>
-     *     <li>Types explicitly added via {@link Builder#additionalType(GraphQLType)}</li>
+     *     <li>Types explicitly added via {@link Builder#additionalType(GraphQLNamedType)}</li>
      * </ul>
      * <p>
      * Additional types are types that are not reachable via any of the automatic traversal paths