diff --git a/src/main/java/lol/hyper/toolstats/ToolStats.java b/src/main/java/lol/hyper/toolstats/ToolStats.java
index 227bf56..782251e 100644
--- a/src/main/java/lol/hyper/toolstats/ToolStats.java
+++ b/src/main/java/lol/hyper/toolstats/ToolStats.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ToolStats.
+ *
+ * ToolStats is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ToolStats is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ToolStats.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package lol.hyper.toolstats;
 
 import lol.hyper.githubreleaseapi.GitHubRelease;
diff --git a/src/main/java/lol/hyper/toolstats/UUIDDataType.java b/src/main/java/lol/hyper/toolstats/UUIDDataType.java
index 5e5959a..155d846 100644
--- a/src/main/java/lol/hyper/toolstats/UUIDDataType.java
+++ b/src/main/java/lol/hyper/toolstats/UUIDDataType.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ToolStats.
+ *
+ * ToolStats is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ToolStats is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ToolStats.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package lol.hyper.toolstats;
 
 import org.bukkit.persistence.PersistentDataAdapterContext;
diff --git a/src/main/java/lol/hyper/toolstats/events/SheepShear.java b/src/main/java/lol/hyper/toolstats/events/SheepShear.java
index aca62c6..1a2afb8 100644
--- a/src/main/java/lol/hyper/toolstats/events/SheepShear.java
+++ b/src/main/java/lol/hyper/toolstats/events/SheepShear.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ToolStats.
+ *
+ * ToolStats is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ToolStats is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ToolStats.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package lol.hyper.toolstats.events;
 
 import lol.hyper.toolstats.ToolStats;