diff --git a/changelog.txt b/changelog.txt
index 7cf7779..2a7f9cc 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,2 +1,2 @@
-<p>A changelog can be found at:&nbsp;<a href="https://www.wimods.net/mo-glass/mo-glass-1-6-1/?mc=1.20.3-pre4&utm_source=CurseForge&utm_medium=Mo+Glass&utm_campaign=Changelog&utm_content=Mo+Glass+MC1.20.3-pre4">https://www.wimods.net/mo-glass/mo-glass-1-6-1/</a></p>
-<p><strong>Note:</strong> This mod requires <a href="https://www.curseforge.com/minecraft/mc-mods/fabric-api/files/4905493" target="_blank" rel="noopener noreferrer">Fabric API for Minecraft 1.20.3-pre4</a>.</p>
+<p>A changelog can be found at:&nbsp;<a href="https://www.wimods.net/mo-glass/mo-glass-1-6-1/?mc=1.20.3-rc1&utm_source=CurseForge&utm_medium=Mo+Glass&utm_campaign=Changelog&utm_content=Mo+Glass+MC1.20.3-rc1">https://www.wimods.net/mo-glass/mo-glass-1-6-1/</a></p>
+<p><strong>Note:</strong> This mod requires <a href="https://www.curseforge.com/minecraft/mc-mods/fabric-api/files/4905493" target="_blank" rel="noopener noreferrer">Fabric API for Minecraft 1.20.3-rc1</a>.</p>
diff --git a/gradle.properties b/gradle.properties
index 5b3699a..222ccf6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,15 +5,15 @@ org.gradle.parallel=true
 # Fabric Properties
 # check these at https://fabricmc.net/develop/ and
 # https://www.curseforge.com/minecraft/mc-mods/fabric-api
-minecraft_version=1.20.3-pre4
-yarn_mappings=1.20.3-pre4+build.1
-loader_version=0.14.25
+minecraft_version=1.20.3-rc1
+yarn_mappings=1.20.3-rc1+build.2
+loader_version=0.15.0
 
 #Fabric api
 fabric_version=0.91.1+1.20.3
 
 # Mod Properties
-mod_version = 1.6.1-MC1.20.3-pre4
+mod_version = 1.6.1-MC1.20.3-rc1
 maven_group = net.wurstclient.glass
 archives_base_name = Mo-Glass