diff --git a/HISTORY.md b/HISTORY.md
index 36e8f2a3..30b8fe50 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -9,6 +9,9 @@
 * **Documentation Updates:**
 * **Translation Updates:**
 
+### 2022-03-10
+* gui: made dev-warning closeable and added official url 
+
 ### 2022-03-09
 * new dev version
 * byob, store, gui: export / import sprite-local custom block definitions, under construction
diff --git a/snap.html b/snap.html
index 8fe7c0da..5f6ac733 100755
--- a/snap.html
+++ b/snap.html
@@ -20,7 +20,7 @@
         <script src="src/threads.js?version=2022-03-03"></script>
         <script src="src/objects.js?version=2022-03-09"></script>
         <script src="src/scenes.js?version=2022-03-03"></script>
-        <script src="src/gui.js?version=2022-03-09"></script>
+        <script src="src/gui.js?version=2022-03-10"></script>
         <script src="src/paint.js?version=2021-07-05"></script>
         <script src="src/lists.js?version=2022-02-07"></script>
         <script src="src/byob.js?version=2022-03-09"></script>
diff --git a/src/gui.js b/src/gui.js
index e63c14ca..c26f3902 100644
--- a/src/gui.js
+++ b/src/gui.js
@@ -86,7 +86,7 @@ BlockVisibilityDialogMorph, ThreadManager*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2022-March-09';
+modules.gui = '2022-March-10';
 
 // Declarations
 
@@ -7471,34 +7471,19 @@ IDE_Morph.prototype.isIE = function () {
 // IDE_Morph warn about saving project in the dev version
 
 IDE_Morph.prototype.warnAboutDev = function () {
-    var dlg, txt;
     if (!SnapVersion.includes('-dev')) {
         return;
     }
-    dlg = new DialogBoxMorph();
-    txt = new TextMorph(
+    this.inform(
+        "CAUTION! Development Version",
         'This version of Snap! is being developed.\n' +
             '*** It is NOT supported for end users. ***\n' +
             'Saving a project in THIS version is likely to\n' +
             'make it UNUSABLE or DEFECTIVE for current and\n' +
-            'even future official versions!',
-        dlg.fontSize,
-        dlg.fontStyle,
-        true,
-        false,
-        'center',
-        null,
-        null,
-        MorphicPreferences.isFlat ? null : new Point(1, 1),
-        WHITE
+            'even future official versions!\n\n' +
+            'visit https://snap.berkeley.edu/run\n' +
+            'for the official Snap! installation.'
     );
-
-    dlg.key = 'Dev-Warning';
-    dlg.labelString = "CAUTION! Development Version";
-    dlg.createLabel();
-    dlg.addBody(txt);
-    dlg.fixLayout();
-    dlg.popUp(this.world());
 };
 
 // ProjectDialogMorph ////////////////////////////////////////////////////