diff --git a/HISTORY.md b/HISTORY.md
index 6fc3fb44..1c214bdf 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -3,13 +3,17 @@
## in development:
* **New Features:**
* **Notable Changes:**
- * optimized color collision detection
* **Notable Fixes:**
* **Translation Updates:**
+## v5.3.8:
+* **Notable Change:**
+ * optimized color collision detection
+
### 2019-11-29
* new dev version
* objects, threads: optimized color collision detection
+* prepared release
## v5.3.7:
* **Notable Fixes:**
diff --git a/snap.html b/snap.html
index 320d1fe6..1e74368f 100755
--- a/snap.html
+++ b/snap.html
@@ -2,7 +2,7 @@
- Snap! Build Your Own Blocks 5.3.8 - dev -
+ Snap! Build Your Own Blocks 5.3.8
diff --git a/src/gui.js b/src/gui.js
index d0f1b163..4119753a 100644
--- a/src/gui.js
+++ b/src/gui.js
@@ -3626,7 +3626,7 @@ IDE_Morph.prototype.aboutSnap = function () {
module, btn1, btn2, btn3, btn4, licenseBtn, translatorsBtn,
world = this.world();
- aboutTxt = 'Snap! 5.3.8 - dev -\nBuild Your Own Blocks\n\n'
+ aboutTxt = 'Snap! 5.3.8\nBuild Your Own Blocks\n\n'
+ 'Copyright \u24B8 2019 Jens M\u00F6nig and '
+ 'Brian Harvey\n'
+ 'jens@moenig.org, bh@cs.berkeley.edu\n\n'