diff --git a/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java b/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java
index e6e11bc9419e8..0ac3da55c1ebd 100644
--- a/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java
+++ b/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java
@@ -71,6 +71,11 @@
 import io.smallrye.graphql.api.AdaptWith;
 import io.smallrye.graphql.api.Entry;
 import io.smallrye.graphql.api.ErrorExtensionProvider;
+import io.smallrye.graphql.api.federation.Extends;
+import io.smallrye.graphql.api.federation.External;
+import io.smallrye.graphql.api.federation.Key;
+import io.smallrye.graphql.api.federation.Provides;
+import io.smallrye.graphql.api.federation.Requires;
 import io.smallrye.graphql.cdi.config.ConfigKey;
 import io.smallrye.graphql.cdi.config.MicroProfileConfig;
 import io.smallrye.graphql.cdi.producer.GraphQLProducer;
@@ -244,6 +249,11 @@ void buildFinalIndex(
         try {
             indexer.indexClass(Map.class);
             indexer.indexClass(Entry.class);
+            indexer.indexClass(Extends.class);
+            indexer.indexClass(External.class);
+            indexer.indexClass(Key.class);
+            indexer.indexClass(Provides.class);
+            indexer.indexClass(Requires.class);
         } catch (IOException ex) {
             LOG.warn("Failure while creating index", ex);
         }
diff --git a/extensions/smallrye-graphql/deployment/src/test/java/io/quarkus/smallrye/graphql/deployment/GraphQLFederationTest.java b/extensions/smallrye-graphql/deployment/src/test/java/io/quarkus/smallrye/graphql/deployment/GraphQLFederationTest.java
new file mode 100644
index 0000000000000..587f597fea5a8
--- /dev/null
+++ b/extensions/smallrye-graphql/deployment/src/test/java/io/quarkus/smallrye/graphql/deployment/GraphQLFederationTest.java
@@ -0,0 +1,59 @@
+package io.quarkus.smallrye.graphql.deployment;
+
+import static org.hamcrest.Matchers.containsString;
+
+import org.eclipse.microprofile.graphql.GraphQLApi;
+import org.eclipse.microprofile.graphql.Query;
+import org.jboss.shrinkwrap.api.asset.EmptyAsset;
+import org.jboss.shrinkwrap.api.asset.StringAsset;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusUnitTest;
+import io.restassured.RestAssured;
+import io.smallrye.graphql.api.federation.Extends;
+
+public class GraphQLFederationTest extends AbstractGraphQLTest {
+
+    @RegisterExtension
+    static QuarkusUnitTest test = new QuarkusUnitTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(FooApi.class, Foo.class)
+                    .addAsResource(new StringAsset("quarkus.smallrye-graphql.schema-include-directives=true"),
+                            "application.properties")
+                    .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml"));
+
+    @Test
+    public void checkServiceDeclarationInSchema() {
+        RestAssured.given()
+                .get("/graphql/schema.graphql")
+                .then()
+                .body(containsString("type _Service {"));
+    }
+
+    @Test
+    public void checkFederationDirectivesInSchema() {
+        RestAssured.given()
+                .get("/graphql/schema.graphql")
+                .then()
+                .body(containsString("name: String @extends"));
+    }
+
+    @GraphQLApi
+    static class FooApi {
+
+        @Query
+        public Foo foo() {
+            return new Foo();
+        }
+
+    }
+
+    static class Foo {
+
+        @Extends
+        public String name;
+
+    }
+
+}