diff --git a/build.gradle b/build.gradle
index 63c494dc4d..99e54b0611 100644
--- a/build.gradle
+++ b/build.gradle
@@ -25,7 +25,7 @@ allprojects {
         appName = 'Mindustry'
         gdxVersion = '1.9.8'
         aiVersion = '1.8.1'
-        uCoreVersion = 'a41b4c2'
+        uCoreVersion = 'b41a747'
 
         getVersionString = {
             String buildVersion = getBuildVersion()
diff --git a/core/assets/version.properties b/core/assets/version.properties
index 420fa77dbb..e0bd984881 100644
--- a/core/assets/version.properties
+++ b/core/assets/version.properties
@@ -1,7 +1,7 @@
 #Autogenerated file. Do not modify.
-#Thu Apr 05 22:24:14 EDT 2018
+#Thu Apr 05 22:30:42 EDT 2018
 version=release
-androidBuildCode=851
+androidBuildCode=853
 name=Mindustry
 code=3.4
 build=custom build