diff --git a/build.gradle b/build.gradle
index 8e0120a3f..325fae53f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -190,7 +190,8 @@ subprojects {
 (subprojects - project(':core'))*.jar {
 	manifest {
 		attributes('Bundle-SymbolicName': project.group + '-' + project.name,
-				   'Fragment-Host': project.group)
+				   'Fragment-Host': project.group,
+				   'Eclipse-PatchFragment': 'true')
 		from sharedManifest
 	}
 }
diff --git a/core/build.gradle b/core/build.gradle
index 9e0054c87..4214db9d9 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -15,7 +15,8 @@ dependencies {
 }
 jar {
 	manifest {
-		attributes('Bundle-SymbolicName': project.group)
+		attributes('Bundle-SymbolicName': project.group,
+				   'Eclipse-ExtensibleAPI: true')
 		from sharedManifest
 	}
 }