diff --git a/Changelog.md b/Changelog.md
index 5ed16762e..9eb26e0af 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -6,6 +6,13 @@ Changes are in reverse chronological order; newest changes at the top.
 
 # Minecraft 1.21.1
 
+## [8.1.1]
+
+### Fixes
+* Fixed server-side memory leak with drones not correctly unregistering an event handler on removal
+* Fixed Refinery sometimes caching invalid recipes (in particular if oil is added before there are enough outputs)
+* The Drone Interface is now craftable again (re-enabled the recipe datagen)
+
 ## [8.1.0]
 
 ### Changed
diff --git a/gradle.properties b/gradle.properties
index 4a3d28f00..6cd884214 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -22,7 +22,7 @@ neogradle.subsystems.parchment.mappingsVersion=2024.07.07
 #########################################################
 mod_id=pneumaticcraft
 archive_base_name=pneumaticcraft-repressurized
-mod_version=8.1.0
+mod_version=8.1.1
 mod_name="PneumaticCraft: Repressurized"
 mod_group_id=me.desht.pneumaticcraft
 mod_license=GPL3