diff --git a/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/Federation.java b/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/Federation.java
index 9db1ffb0..de6a413e 100644
--- a/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/Federation.java
+++ b/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/Federation.java
@@ -35,6 +35,7 @@ public final class Federation {
   public static final String FEDERATION_SPEC_V2_6 = "https://specs.apollo.dev/federation/v2.6";
   public static final String FEDERATION_SPEC_V2_7 = "https://specs.apollo.dev/federation/v2.7";
   public static final String FEDERATION_SPEC_V2_8 = "https://specs.apollo.dev/federation/v2.8";
+  public static final String FEDERATION_SPEC_V2_9 = "https://specs.apollo.dev/federation/v2.9";
 
   private static final SchemaGenerator.Options generatorOptions =
       SchemaGenerator.Options.defaultOptions();
diff --git a/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/FederationDirectives.java b/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/FederationDirectives.java
index 254ea2e3..8898c943 100644
--- a/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/FederationDirectives.java
+++ b/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/FederationDirectives.java
@@ -9,6 +9,7 @@
 import static com.apollographql.federation.graphqljava.Federation.FEDERATION_SPEC_V2_6;
 import static com.apollographql.federation.graphqljava.Federation.FEDERATION_SPEC_V2_7;
 import static com.apollographql.federation.graphqljava.Federation.FEDERATION_SPEC_V2_8;
+import static com.apollographql.federation.graphqljava.Federation.FEDERATION_SPEC_V2_9;
 import static graphql.introspection.Introspection.DirectiveLocation.FIELD_DEFINITION;
 import static graphql.introspection.Introspection.DirectiveLocation.INTERFACE;
 import static graphql.introspection.Introspection.DirectiveLocation.OBJECT;
@@ -232,6 +233,8 @@ public static List<SDLNamedDefinition> loadFederationSpecDefinitions(String fede
         return loadFed2Definitions("definitions_fed2_7.graphqls");
       case FEDERATION_SPEC_V2_8:
         return loadFed2Definitions("definitions_fed2_8.graphqls");
+      case FEDERATION_SPEC_V2_9:
+        return loadFed2Definitions("definitions_fed2_9.graphqls");
       default:
         throw new UnsupportedFederationVersionException(federationSpec);
     }
diff --git a/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/directives/LinkDirectiveProcessor.java b/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/directives/LinkDirectiveProcessor.java
index 6e7b9f6d..b7100867 100644
--- a/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/directives/LinkDirectiveProcessor.java
+++ b/graphql-java-support/src/main/java/com/apollographql/federation/graphqljava/directives/LinkDirectiveProcessor.java
@@ -32,7 +32,11 @@ public final class LinkDirectiveProcessor {
           "@interfaceObject", 23,
           "@authenticated", 25,
           "@requiresScopes", 25,
-          "@policy", 26);
+          "@policy", 26,
+          "@context", 28,
+          "@fromContext", 28,
+          "@cost", 29,
+          "@listSize", 29);
 
   private LinkDirectiveProcessor() {}
 
diff --git a/graphql-java-support/src/main/resources/definitions_fed2_9.graphqls b/graphql-java-support/src/main/resources/definitions_fed2_9.graphqls
new file mode 100644
index 00000000..356988c7
--- /dev/null
+++ b/graphql-java-support/src/main/resources/definitions_fed2_9.graphqls
@@ -0,0 +1,136 @@
+#
+# https://specs.apollo.dev/federation/v2.0/federation-v2.0.graphql
+#
+
+directive @key(fields: FieldSet!, resolvable: Boolean = true) repeatable on OBJECT | INTERFACE
+directive @requires(fields: FieldSet!) on FIELD_DEFINITION
+directive @provides(fields: FieldSet!) on FIELD_DEFINITION
+directive @external on OBJECT | FIELD_DEFINITION
+directive @extends on OBJECT | INTERFACE
+directive @inaccessible on
+    | FIELD_DEFINITION
+    | OBJECT
+    | INTERFACE
+    | UNION
+    | ENUM
+    | ENUM_VALUE
+    | SCALAR
+    | INPUT_OBJECT
+    | INPUT_FIELD_DEFINITION
+    | ARGUMENT_DEFINITION
+directive @tag(name: String!) repeatable on
+    | FIELD_DEFINITION
+    | INTERFACE
+    | OBJECT
+    | UNION
+    | ARGUMENT_DEFINITION
+    | SCALAR
+    | ENUM
+    | ENUM_VALUE
+    | INPUT_OBJECT
+    | INPUT_FIELD_DEFINITION
+scalar FieldSet
+
+#
+# https://specs.apollo.dev/link/v1.0/link-v1.0.graphql
+#
+
+directive @link(
+    url: String!,
+    as: String,
+    import: [Import],
+    for: Purpose)
+repeatable on SCHEMA
+
+scalar Import
+
+enum Purpose {
+  SECURITY
+  EXECUTION
+}
+
+#
+# federation-v2.1
+#
+
+directive @composeDirective(name: String!) repeatable on SCHEMA
+
+#
+# federation-v2.2
+#
+
+directive @shareable repeatable on FIELD_DEFINITION | OBJECT
+
+#
+# federation-v2.3
+#
+
+directive @interfaceObject on OBJECT
+
+#
+# federation-v2.5
+#
+
+directive @authenticated on
+    ENUM
+  | FIELD_DEFINITION
+  | INTERFACE
+  | OBJECT
+  | SCALAR
+
+directive @requiresScopes(scopes: [[Scope!]!]!) on
+    ENUM
+  | FIELD_DEFINITION
+  | INTERFACE
+  | OBJECT
+  | SCALAR
+
+scalar Scope
+
+#
+# federation-v2.6
+#
+
+directive @policy(policies: [[Policy!]!]!) on
+    ENUM
+  | FIELD_DEFINITION
+  | INTERFACE
+  | OBJECT
+  | SCALAR
+
+scalar Policy
+
+#
+# federation-v2.7
+#
+
+directive @override(from: String!, label: String) on FIELD_DEFINITION
+
+#
+# federation-v2.8
+#
+
+scalar ContextFieldValue
+
+directive @context(name: String!) repeatable on INTERFACE | OBJECT | UNION
+
+directive @fromContext(field: ContextFieldValue) on ARGUMENT_DEFINITION
+
+#
+# federation-v2.9
+#
+
+directive @cost(weight: Int!) on
+    ARGUMENT_DEFINITION
+  | ENUM
+  | FIELD_DEFINITION
+  | INPUT_FIELD_DEFINITION
+  | OBJECT
+  | SCALAR
+
+directive @listSize(
+  assumedSize: Int,
+  slicingArguments: [String!],
+  sizedFields: [String!],
+  requireOneSlicingArgument: Boolean = true
+) on FIELD_DEFINITION
\ No newline at end of file
diff --git a/graphql-java-support/src/test/java/com/apollographql/federation/graphqljava/FederationTest.java b/graphql-java-support/src/test/java/com/apollographql/federation/graphqljava/FederationTest.java
index e88bc834..9b7cb75c 100644
--- a/graphql-java-support/src/test/java/com/apollographql/federation/graphqljava/FederationTest.java
+++ b/graphql-java-support/src/test/java/com/apollographql/federation/graphqljava/FederationTest.java
@@ -332,6 +332,14 @@ public void verifyFederationV2Transformation_context() {
     verifyFederationTransformation("schemas/context/schema.graphql");
   }
 
+  @Test
+  public void verifyFederationV2Transformation_contextFromUnsupportedVersion_throwsException() {
+    final String schemaSDL = FileUtils.readResource("schemas/invalidSpecVersionContext.graphql");
+    assertThrows(
+        UnsupportedLinkImportException.class,
+        () -> Federation.transform(schemaSDL).fetchEntities(env -> null).build());
+  }
+
   @Test
   public void
       verifyFederationV2Transformation_requiresScopesFromUnsupportedVersion_throwsException() {
@@ -370,6 +378,19 @@ public void verifyFederationV2Transformation_scalarsDefinedInSchemaButNotWired()
     verifyFederationTransformation("schemas/scalars/schema.graphql");
   }
 
+  @Test
+  public void verifyFederationV2Transformation_cost() {
+    verifyFederationTransformation("schemas/cost/schema.graphql");
+  }
+
+  @Test
+  public void verifyFederationV2Transformation_costFromUnsupportedVersion_throwsException() {
+    final String schemaSDL = FileUtils.readResource("schemas/invalidSpecVersionCost.graphql");
+    assertThrows(
+        UnsupportedLinkImportException.class,
+        () -> Federation.transform(schemaSDL).fetchEntities(env -> null).build());
+  }
+
   private void verifyFederationTransformation(String schemaFileName) {
     final RuntimeWiring runtimeWiring = RuntimeWiring.newRuntimeWiring().build();
     verifyFederationTransformation(schemaFileName, runtimeWiring);