diff --git a/ospec/change-log.md b/ospec/change-log.md
index 3e6c7f6d..2eab4f48 100644
--- a/ospec/change-log.md
+++ b/ospec/change-log.md
@@ -12,6 +12,9 @@
 
 ### Upcoming...
 
+### 4.0.0
+- Pull ESM support out
+
 ### 3.1.0
 - ospec: Test results now include `.message` and `.context` regardless of whether the test passed or failed. (#2227 @robertakarobin)
 <!-- Add new lines here. Version number will be decided later -->
diff --git a/ospec/package.json b/ospec/package.json
index e2a604d2..a8cb6a94 100644
--- a/ospec/package.json
+++ b/ospec/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ospec",
-  "version": "3.1.0",
+  "version": "4.0.0",
   "description": "Noiseless testing framework",
   "main": "ospec.js",
   "directories": {