diff --git a/src/main/java/com/minelittlepony/render/plane/package-info.java b/src/main/java/com/minelittlepony/render/plane/package-info.java
new file mode 100644
index 00000000..07179e8a
--- /dev/null
+++ b/src/main/java/com/minelittlepony/render/plane/package-info.java
@@ -0,0 +1,7 @@
+@MethodsReturnNonnullByDefault
+@ParametersAreNonnullByDefault
+package com.minelittlepony.render.plane;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;
diff --git a/src/main/java/com/minelittlepony/render/player/package-info.java b/src/main/java/com/minelittlepony/render/player/package-info.java
new file mode 100644
index 00000000..ee1504e8
--- /dev/null
+++ b/src/main/java/com/minelittlepony/render/player/package-info.java
@@ -0,0 +1,7 @@
+@MethodsReturnNonnullByDefault
+@ParametersAreNonnullByDefault
+package com.minelittlepony.render.player;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;
diff --git a/src/main/java/com/minelittlepony/render/ponies/package-info.java b/src/main/java/com/minelittlepony/render/ponies/package-info.java
new file mode 100644
index 00000000..5ecb94c1
--- /dev/null
+++ b/src/main/java/com/minelittlepony/render/ponies/package-info.java
@@ -0,0 +1,7 @@
+@MethodsReturnNonnullByDefault
+@ParametersAreNonnullByDefault
+package com.minelittlepony.render.ponies;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;
diff --git a/src/main/java/com/minelittlepony/util/coordinates/package-info.java b/src/main/java/com/minelittlepony/util/coordinates/package-info.java
new file mode 100644
index 00000000..0196ca93
--- /dev/null
+++ b/src/main/java/com/minelittlepony/util/coordinates/package-info.java
@@ -0,0 +1,7 @@
+@MethodsReturnNonnullByDefault
+@ParametersAreNonnullByDefault
+package com.minelittlepony.util.coordinates;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;
diff --git a/src/main/java/com/minelittlepony/util/math/package-info.java b/src/main/java/com/minelittlepony/util/math/package-info.java
new file mode 100644
index 00000000..5d02780c
--- /dev/null
+++ b/src/main/java/com/minelittlepony/util/math/package-info.java
@@ -0,0 +1,7 @@
+@MethodsReturnNonnullByDefault
+@ParametersAreNonnullByDefault
+package com.minelittlepony.util.math;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;