diff --git a/gradle.properties b/gradle.properties
index 53d249f..2ceb85e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,13 +2,13 @@
 org.gradle.jvmargs=-Xmx1G
 # Fabric Properties
 # check these on https://modmuss50.me/fabric.html
-minecraft_version=1.21.2-pre3
-yarn_mappings=1.21.2-pre3+build.2
+minecraft_version=1.21.2-pre4
+yarn_mappings=1.21.2-pre4+build.3
 loader_version=0.16.7
 # Mod Properties
 mod_version=1.1+1.21-SNAPSHOT.1
 maven_group=me.lukasabbe
 archives_base_name=Bookshelfinspector
 
-fabric_version=0.105.4+1.21.2
+fabric_version=0.106.0+1.21.2