diff --git a/packages/preview2-shim/CHANGELOG.md b/packages/preview2-shim/CHANGELOG.md
index c265df3de..da6aaef5e 100644
--- a/packages/preview2-shim/CHANGELOG.md
+++ b/packages/preview2-shim/CHANGELOG.md
@@ -1,5 +1,27 @@
 # Changelog
 
+## [0.20.0] - 2026-08-03
+
+### 🚀 Features
+
+- _(p2-shim)_ add empty HTTP trailers by @vados-cosmonic in #1774
+
+### ⚡ Performance
+
+- _(p2-shim)_ reuse browser filesystem buffers by @subotac in #1795
+
+### ⚙️ Miscellaneous Tasks
+
+- _(p2-shim)_ update componentize-js to v0.22.0 by @vados-cosmonic
+
+- _(p2-shim)_ fmt by @vados-cosmonic in #1773
+
+- _(p2-shim)_ update jco to v1.25.2 by @vados-cosmonic
+
+## New Contributors
+
+- @subotac made their first contribution in [#1795](https://github.com/bytecodealliance/jco/pull/1795)
+
 ## [0.19.0] - 2026-06-19
 
 ### 🚀 Features
diff --git a/packages/preview2-shim/package.json b/packages/preview2-shim/package.json
index 03a7770d7..784aa7997 100644
--- a/packages/preview2-shim/package.json
+++ b/packages/preview2-shim/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@bytecodealliance/preview2-shim",
-    "version": "0.19.0",
+    "version": "0.20.0",
     "description": "WASI Preview2 shim for JS environments",
     "homepage": "https://github.com/bytecodealliance/jco#readme",
     "bugs": {