diff --git a/gradle.properties b/gradle.properties
index 4a71e44..bb0edf9 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,14 +2,14 @@
 org.gradle.jvmargs=-Xmx2G
 # Fabric Properties
 # check these on https://modmuss50.me/fabric.html
-minecraft_version=1.20.5
-yarn_mappings=1.20.5+build.1
-loader_version=0.15.10
+minecraft_version=1.21.1
+yarn_mappings=1.21.1+build.3
+loader_version=0.16.5
 # Mod Properties
-mod_version=0.3
+mod_version=0.4
 maven_group=com.campersamu
 archives_base_name=chatheads
 # Dependencies
 # check this on https://modmuss50.me/fabric.html
-papi_version=2.4.0-pre.1+1.20.5
-polymer_version=0.8.0-beta.6+1.20.5
+papi_version=2.4.1+1.21
+polymer_version=0.9.14+1.21.1
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index 0009544..112b1fd 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -24,8 +24,8 @@
     "chatheads.mixins.json"
   ],
   "depends": {
-    "fabricloader": ">=0.15.10",
-    "minecraft": "1.20.x"
+    "fabricloader": ">=0.16.0",
+    "minecraft": "1.21.x"
   },
   "suggests": {
     "polymer": "*",