diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f015274..8e29ed55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 0.9.9
+
+ * Improvements to playfield collisions during HBLANK. Fixes a glitch in
+   Thrust.
+
 # 0.9.8
 
  * Stellerator: UI fixes for mobile devices
diff --git a/package.json b/package.json
index 0129191c..fecda458 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "6502.ts",
-  "version": "0.9.8",
+  "version": "0.9.9",
   "description": "A 6502 emulator written in typescript",
   "author": "cnspeckn@googlemail.com",
   "license": "GPL-2.0+",