diff --git a/angular/projects/demo/src/app/dummy.component.ts b/angular/projects/demo/src/app/dummy.component.ts
index 86b6190b1..02eaccd48 100644
--- a/angular/projects/demo/src/app/dummy.component.ts
+++ b/angular/projects/demo/src/app/dummy.component.ts
@@ -1,5 +1,5 @@
 /**
- * gridstack.component.ts 8.1.2
+ * gridstack.component.ts 8.1.2-dev
  * Copyright (c) 2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/angular/projects/lib/package.json b/angular/projects/lib/package.json
index 181a706e4..edc730e28 100644
--- a/angular/projects/lib/package.json
+++ b/angular/projects/lib/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gridstack-angular",
-  "version": "8.1.2",
+  "version": "8.1.2-dev",
   "peerDependencies": {
     "@angular/common": "^14.2.0",
     "@angular/core": "^14.2.0"
diff --git a/angular/projects/lib/src/lib/gridstack-item.component.ts b/angular/projects/lib/src/lib/gridstack-item.component.ts
index 480c925b6..e08a470a6 100644
--- a/angular/projects/lib/src/lib/gridstack-item.component.ts
+++ b/angular/projects/lib/src/lib/gridstack-item.component.ts
@@ -1,5 +1,5 @@
 /**
- * gridstack-item.component.ts 8.1.2
+ * gridstack-item.component.ts 8.1.2-dev
  * Copyright (c) 2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/angular/projects/lib/src/lib/gridstack.component.ts b/angular/projects/lib/src/lib/gridstack.component.ts
index 5ce4d1896..e894affe6 100644
--- a/angular/projects/lib/src/lib/gridstack.component.ts
+++ b/angular/projects/lib/src/lib/gridstack.component.ts
@@ -1,5 +1,5 @@
 /**
- * gridstack.component.ts 8.1.2
+ * gridstack.component.ts 8.1.2-dev
  * Copyright (c) 2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/angular/projects/lib/src/lib/gridstack.module.ts b/angular/projects/lib/src/lib/gridstack.module.ts
index f4236ed0e..173971f04 100644
--- a/angular/projects/lib/src/lib/gridstack.module.ts
+++ b/angular/projects/lib/src/lib/gridstack.module.ts
@@ -1,5 +1,5 @@
 /**
- * gridstack.component.ts 8.1.2
+ * gridstack.component.ts 8.1.2-dev
  * Copyright (c) 2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/package.json b/package.json
index cea304ced..83d8f3a32 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gridstack",
-  "version": "8.1.2",
+  "version": "8.1.2-dev",
   "license": "MIT",
   "author": "Alain Dumesny <alaind831+github@gmail.com> (https://github.com/adumesny)",
   "contributors": [
diff --git a/src/dd-base-impl.ts b/src/dd-base-impl.ts
index dd8b434a0..af70a441f 100644
--- a/src/dd-base-impl.ts
+++ b/src/dd-base-impl.ts
@@ -1,5 +1,5 @@
 /**
- * dd-base-impl.ts 8.1.2
+ * dd-base-impl.ts 8.1.2-dev
  * Copyright (c) 2021-2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-draggable.ts b/src/dd-draggable.ts
index d7193a362..f0dbee451 100644
--- a/src/dd-draggable.ts
+++ b/src/dd-draggable.ts
@@ -1,5 +1,5 @@
 /**
- * dd-draggable.ts 8.1.2
+ * dd-draggable.ts 8.1.2-dev
  * Copyright (c) 2021-2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-droppable.ts b/src/dd-droppable.ts
index 375ad11e6..96b76cbb4 100644
--- a/src/dd-droppable.ts
+++ b/src/dd-droppable.ts
@@ -1,5 +1,5 @@
 /**
- * dd-droppable.ts 8.1.2
+ * dd-droppable.ts 8.1.2-dev
  * Copyright (c) 2021-2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-element.ts b/src/dd-element.ts
index 5d783bb26..29e594b95 100644
--- a/src/dd-element.ts
+++ b/src/dd-element.ts
@@ -1,5 +1,5 @@
 /**
- * dd-elements.ts 8.1.2
+ * dd-elements.ts 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-gridstack.ts b/src/dd-gridstack.ts
index 31d1448dc..40649e870 100644
--- a/src/dd-gridstack.ts
+++ b/src/dd-gridstack.ts
@@ -1,5 +1,5 @@
 /**
- * dd-gridstack.ts 8.1.2
+ * dd-gridstack.ts 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-manager.ts b/src/dd-manager.ts
index 60229273b..c4c437cd3 100644
--- a/src/dd-manager.ts
+++ b/src/dd-manager.ts
@@ -1,5 +1,5 @@
 /**
- * dd-manager.ts 8.1.2
+ * dd-manager.ts 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-resizable-handle.ts b/src/dd-resizable-handle.ts
index 9274f52c7..54d7cdf9f 100644
--- a/src/dd-resizable-handle.ts
+++ b/src/dd-resizable-handle.ts
@@ -1,5 +1,5 @@
 /**
- * dd-resizable-handle.ts 8.1.2
+ * dd-resizable-handle.ts 8.1.2-dev
  * Copyright (c) 2021-2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-resizable.ts b/src/dd-resizable.ts
index 94a20f1a5..178fc263d 100644
--- a/src/dd-resizable.ts
+++ b/src/dd-resizable.ts
@@ -1,5 +1,5 @@
 /**
- * dd-resizable.ts 8.1.2
+ * dd-resizable.ts 8.1.2-dev
  * Copyright (c) 2021-2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/dd-touch.ts b/src/dd-touch.ts
index 9b355e35a..c2ec4068c 100644
--- a/src/dd-touch.ts
+++ b/src/dd-touch.ts
@@ -1,5 +1,5 @@
 /**
- * touch.ts 8.1.2
+ * touch.ts 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/gridstack-engine.ts b/src/gridstack-engine.ts
index 6c4b852d4..596564687 100644
--- a/src/gridstack-engine.ts
+++ b/src/gridstack-engine.ts
@@ -1,5 +1,5 @@
 /**
- * gridstack-engine.ts 8.1.2
+ * gridstack-engine.ts 8.1.2-dev
  * Copyright (c) 2021-2022 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/gridstack-poly.js b/src/gridstack-poly.js
index 202bf56af..6ec55fa47 100644
--- a/src/gridstack-poly.js
+++ b/src/gridstack-poly.js
@@ -1,5 +1,5 @@
 /**
- * gridstack-poly.ts 8.1.2 used for IE and older browser support (not supported in v2-v4.3.1, but again in v4.4)
+ * gridstack-poly.ts 8.1.2-dev used for IE and older browser support (not supported in v2-v4.3.1, but again in v4.4)
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/gridstack.scss b/src/gridstack.scss
index e7f36575f..27da3059f 100644
--- a/src/gridstack.scss
+++ b/src/gridstack.scss
@@ -1,5 +1,5 @@
 /**
- * gridstack SASS styles 8.1.2
+ * gridstack SASS styles 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/gridstack.ts b/src/gridstack.ts
index 44ea9c68e..edeb04002 100644
--- a/src/gridstack.ts
+++ b/src/gridstack.ts
@@ -1,5 +1,5 @@
 /*!
- * GridStack 8.1.2
+ * GridStack 8.1.2-dev
  * https://gridstackjs.com/
  *
  * Copyright (c) 2021-2022 Alain Dumesny
@@ -1640,7 +1640,7 @@ export class GridStack {
     return this;
   }
 
-  static GDRev = '8.1.2';
+  static GDRev = '8.1.2-dev';
 
   /* ===========================================================================================
    * drag&drop methods that used to be stubbed out and implemented in dd-gridstack.ts
diff --git a/src/types.ts b/src/types.ts
index e5ba99295..e021d3fbd 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,5 +1,5 @@
 /**
- * types.ts 8.1.2
+ * types.ts 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */
 
diff --git a/src/utils.ts b/src/utils.ts
index 6dbf85437..ecf7c5723 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,5 +1,5 @@
 /**
- * utils.ts 8.1.2
+ * utils.ts 8.1.2-dev
  * Copyright (c) 2021 Alain Dumesny - see GridStack root license
  */