diff --git a/HISTORY.md b/HISTORY.md
index d03fe2ed..58a1fd56 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -5,6 +5,7 @@
 ### 2021-06-14
 * new dev version
 * threads, blocks, objects, extensions: new safe extensions mechanism
+* objects: added new "primitive" blocks to dev palette
 
 ## 6.9.0
 * **Notable Changes:**
diff --git a/src/objects.js b/src/objects.js
index dcd80f31..d70502f5 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -2841,6 +2841,9 @@ SpriteMorph.prototype.blockTemplates = function (category) {
             blocks.push(txt);
             blocks.push('-');
             blocks.push(block('doShowTable'));
+            blocks.push('-');
+            blocks.push(block('doApplyExtension'));
+            blocks.push(block('reportApplyExtension'));
         }
 
     /////////////////////////////////
@@ -9007,6 +9010,9 @@ StageMorph.prototype.blockTemplates = function (category) {
             blocks.push(txt);
             blocks.push('-');
             blocks.push(block('doShowTable'));
+            blocks.push('-');
+            blocks.push(block('doApplyExtension'));
+            blocks.push(block('reportApplyExtension'));
         }
 
     /////////////////////////////////