diff --git a/src/main/java/net/minecraftforge/fml/DatagenModLoader.java b/src/main/java/net/minecraftforge/fml/DatagenModLoader.java
index ca09f5125..6c97ac8e1 100644
--- a/src/main/java/net/minecraftforge/fml/DatagenModLoader.java
+++ b/src/main/java/net/minecraftforge/fml/DatagenModLoader.java
@@ -1,7 +1,26 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016-2020.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
 package net.minecraftforge.fml;
 
 import net.minecraft.util.registry.Bootstrap;
-import net.minecraftforge.client.model.generators.ExistingFileHelper;
+import net.minecraftforge.common.data.ExistingFileHelper;
 import net.minecraftforge.fml.event.lifecycle.GatherDataEvent;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
diff --git a/src/main/java/net/minecraftforge/fml/ModWorkManager.java b/src/main/java/net/minecraftforge/fml/ModWorkManager.java
index 13161b19a..21c6cda2f 100644
--- a/src/main/java/net/minecraftforge/fml/ModWorkManager.java
+++ b/src/main/java/net/minecraftforge/fml/ModWorkManager.java
@@ -1,3 +1,22 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016-2020.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
 package net.minecraftforge.fml;
 
 import net.minecraftforge.fml.loading.FMLConfig;
diff --git a/src/main/java/net/minecraftforge/fml/event/lifecycle/FMLConstructModEvent.java b/src/main/java/net/minecraftforge/fml/event/lifecycle/FMLConstructModEvent.java
index 4ea9bda24..19b37adc0 100644
--- a/src/main/java/net/minecraftforge/fml/event/lifecycle/FMLConstructModEvent.java
+++ b/src/main/java/net/minecraftforge/fml/event/lifecycle/FMLConstructModEvent.java
@@ -1,3 +1,22 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016-2020.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
 package net.minecraftforge.fml.event.lifecycle;
 
 import net.minecraftforge.fml.ModContainer;
diff --git a/src/main/java/net/minecraftforge/fml/event/lifecycle/ParallelDispatchEvent.java b/src/main/java/net/minecraftforge/fml/event/lifecycle/ParallelDispatchEvent.java
index 597ebe8eb..f7913b151 100644
--- a/src/main/java/net/minecraftforge/fml/event/lifecycle/ParallelDispatchEvent.java
+++ b/src/main/java/net/minecraftforge/fml/event/lifecycle/ParallelDispatchEvent.java
@@ -1,3 +1,22 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016-2020.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
 package net.minecraftforge.fml.event.lifecycle;
 
 import net.minecraftforge.fml.DeferredWorkQueue;