diff --git a/common/src/main/resources/flan.mixins.json b/common/src/main/resources/flan.mixins.json
index dcd7634..a69e7c8 100644
--- a/common/src/main/resources/flan.mixins.json
+++ b/common/src/main/resources/flan.mixins.json
@@ -2,7 +2,7 @@
   "required": true,
   "minVersion": "0.8",
   "package": "io.github.flemmli97.flan.mixin",
-  "compatibilityLevel": "JAVA_8",
+  "compatibilityLevel": "JAVA_16",
   "mixins": [
     "PlayerClaimMixin",
     "ServerWorldMixin",
diff --git a/forge/src/main/resources/META-INF/mods.toml b/forge/src/main/resources/META-INF/mods.toml
index f26f3e4..dca5951 100644
--- a/forge/src/main/resources/META-INF/mods.toml
+++ b/forge/src/main/resources/META-INF/mods.toml
@@ -1,5 +1,5 @@
 modLoader="javafml"
-loaderVersion="[39,)"
+loaderVersion="[40,)"
 license="All rights reserved"
 issueTrackerURL="https://github.com/Flemmli97/Flan/issues"
 [[mods]] 
diff --git a/forge/src/main/resources/pack.mcmeta b/forge/src/main/resources/pack.mcmeta
index 971b731..6305808 100644
--- a/forge/src/main/resources/pack.mcmeta
+++ b/forge/src/main/resources/pack.mcmeta
@@ -1,6 +1,6 @@
 {
     "pack": {
         "description": "Flan resources",
-        "pack_format": 7
+        "pack_format": 9
     }
 }
\ No newline at end of file