diff --git a/src/main/resources/assets/appliedenergistics2/lang/cs_CZ.lang b/src/main/resources/assets/appliedenergistics2/lang/cs_cz.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/cs_CZ.lang
rename to src/main/resources/assets/appliedenergistics2/lang/cs_cz.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/de_DE.lang b/src/main/resources/assets/appliedenergistics2/lang/de_de.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/de_DE.lang
rename to src/main/resources/assets/appliedenergistics2/lang/de_de.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/en_GB.lang b/src/main/resources/assets/appliedenergistics2/lang/en_gb.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/en_GB.lang
rename to src/main/resources/assets/appliedenergistics2/lang/en_gb.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/en_US.lang b/src/main/resources/assets/appliedenergistics2/lang/en_us.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/en_US.lang
rename to src/main/resources/assets/appliedenergistics2/lang/en_us.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/es_ES.lang b/src/main/resources/assets/appliedenergistics2/lang/es_es.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/es_ES.lang
rename to src/main/resources/assets/appliedenergistics2/lang/es_es.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/fr_FR.lang b/src/main/resources/assets/appliedenergistics2/lang/fr_fr.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/fr_FR.lang
rename to src/main/resources/assets/appliedenergistics2/lang/fr_fr.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/hu_HU.lang b/src/main/resources/assets/appliedenergistics2/lang/hu_hu.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/hu_HU.lang
rename to src/main/resources/assets/appliedenergistics2/lang/hu_hu.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/it_IT.lang b/src/main/resources/assets/appliedenergistics2/lang/it_it.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/it_IT.lang
rename to src/main/resources/assets/appliedenergistics2/lang/it_it.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/ko_KR.lang b/src/main/resources/assets/appliedenergistics2/lang/ko_kr.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/ko_KR.lang
rename to src/main/resources/assets/appliedenergistics2/lang/ko_kr.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/pt_BR.lang b/src/main/resources/assets/appliedenergistics2/lang/pt_br.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/pt_BR.lang
rename to src/main/resources/assets/appliedenergistics2/lang/pt_br.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/ro_RO.lang b/src/main/resources/assets/appliedenergistics2/lang/ro_ro.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/ro_RO.lang
rename to src/main/resources/assets/appliedenergistics2/lang/ro_ro.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/ru_RU.lang b/src/main/resources/assets/appliedenergistics2/lang/ru_ru.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/ru_RU.lang
rename to src/main/resources/assets/appliedenergistics2/lang/ru_ru.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/zh_CN.lang b/src/main/resources/assets/appliedenergistics2/lang/zh_cn.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/zh_CN.lang
rename to src/main/resources/assets/appliedenergistics2/lang/zh_cn.lang
diff --git a/src/main/resources/assets/appliedenergistics2/lang/zh_TW.lang b/src/main/resources/assets/appliedenergistics2/lang/zh_tw.lang
similarity index 100%
rename from src/main/resources/assets/appliedenergistics2/lang/zh_TW.lang
rename to src/main/resources/assets/appliedenergistics2/lang/zh_tw.lang
diff --git a/src/main/resources/pack.mcmeta b/src/main/resources/pack.mcmeta
index 52bf0b6e5..6d62b6bda 100644
--- a/src/main/resources/pack.mcmeta
+++ b/src/main/resources/pack.mcmeta
@@ -1,6 +1,6 @@
 {
   "pack": {
-    "pack_format": 2,
+    "pack_format": 3,
     "description": "Resources used for Applied Energistics 2"
   }
 }