diff --git a/org.knime.python3.types/META-INF/MANIFEST.MF b/org.knime.python3.types/META-INF/MANIFEST.MF
index f768b9929..4a8aaa2ab 100644
--- a/org.knime.python3.types/META-INF/MANIFEST.MF
+++ b/org.knime.python3.types/META-INF/MANIFEST.MF
@@ -12,4 +12,3 @@ Require-Bundle: com.fasterxml.jackson.core.jackson-databind;bundle-version="[2.1
  org.knime.core.table;bundle-version="[5.0.0,6.0.0)"
 Export-Package: org.knime.python3.types
 Automatic-Module-Name: org.knime.python3.types
-Eclipse-ExtensibleAPI: true
diff --git a/org.knime.python3.views/META-INF/MANIFEST.MF b/org.knime.python3.views/META-INF/MANIFEST.MF
index 8c62c66f6..34dd4ce44 100644
--- a/org.knime.python3.views/META-INF/MANIFEST.MF
+++ b/org.knime.python3.views/META-INF/MANIFEST.MF
@@ -13,5 +13,4 @@ Require-Bundle: org.knime.python3;bundle-version="[5.0.0,6.0.0)",
 Automatic-Module-Name: org.knime.python3.views
 Eclipse-BundleShape: dir
 Eclipse-RegisterBuddy: org.knime.ext.py4j
-Eclipse-ExtensibleAPI: true
 Export-Package: org.knime.python3.views