diff --git a/packages/block-library/src/column/block.json b/packages/block-library/src/column/block.json
index 826b916811cadc..1a1513ad2e66c3 100644
--- a/packages/block-library/src/column/block.json
+++ b/packages/block-library/src/column/block.json
@@ -17,7 +17,6 @@
 			"type": "array"
 		},
 		"templateLock": {
-			"type": "string",
 			"enum": [ "all", "insert", false ]
 		}
 	},
diff --git a/packages/block-library/src/cover/block.json b/packages/block-library/src/cover/block.json
index cac312ec13386c..ecb8227079c158 100644
--- a/packages/block-library/src/cover/block.json
+++ b/packages/block-library/src/cover/block.json
@@ -67,7 +67,6 @@
 			"type": "array"
 		},
 		"templateLock": {
-			"type": "string",
 			"enum": [ "all", "insert", false ]
 		}
 	},
diff --git a/packages/block-library/src/group/block.json b/packages/block-library/src/group/block.json
index c10790d28c427c..5e182cd0e9cba9 100644
--- a/packages/block-library/src/group/block.json
+++ b/packages/block-library/src/group/block.json
@@ -12,7 +12,6 @@
 			"default": "div"
 		},
 		"templateLock": {
-			"type": "string",
 			"enum": [ "all", "insert", false ]
 		}
 	},