diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7561db65d..a3e9c7ed7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 1.3.9+mc1.21.1
+* Change laser rendering to be compatible with Iris
+* Fix machines in the Engineer House being obtainable when broken
+
 # 1.3.8+mc1.21.1
 * Lock the Immersive Engineering cloche compat recipes behind a mod loaded condition
 * Add the stairs, slabs and walls to the appropriate block/item tags
diff --git a/gradle.properties b/gradle.properties
index 255f5afb1..beeceb2bd 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,7 +4,7 @@ org.gradle.parallel=true
 org.gradle.caching=true
 org.gradle.configuration-cache=false
 
-mod_version=1.3.8
+mod_version=1.3.9
 
 # Forge
 game_version=1.21.1