diff --git a/.gitmodules b/.gitmodules
index f82415bc..8dbc25b6 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -264,3 +264,6 @@
 [submodule "stirring"]
 	path = stirring
 	url = https://github.com/hansliu/pelican-stirring.git
+[submodule "astrochelys"]
+	path = astrochelys
+	url = https://github.com/out-of-cheese-error/astrochelys.git
diff --git a/astrochelys b/astrochelys
new file mode 160000
index 00000000..1f8f3d75
--- /dev/null
+++ b/astrochelys
@@ -0,0 +1 @@
+Subproject commit 1f8f3d753b14c3aa6f959bcbe4047995bb98f852