diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/EcoArmorPlugin.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/EcoArmorPlugin.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/EcoArmorPlugin.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/EcoArmorPlugin.kt
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSet.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/sets/ArmorSet.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSet.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/sets/ArmorSet.kt
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSets.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/sets/ArmorSets.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSets.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/sets/ArmorSets.kt
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/util/ArmorUtils.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/sets/ArmorUtils.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/util/ArmorUtils.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/sets/ArmorUtils.kt
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/Tier.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/upgrades/Tier.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/Tier.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/upgrades/Tier.kt
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/Tiers.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/upgrades/Tiers.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/Tiers.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoarmor/upgrades/Tiers.kt