diff --git a/TurboPFor-Integer-Compression/.gitmodules b/TurboPFor-Integer-Compression/.gitmodules
new file mode 100644
index 0000000..f5b8729
--- /dev/null
+++ b/TurboPFor-Integer-Compression/.gitmodules
@@ -0,0 +1,12 @@
+[submodule "ext/lz4"]
+	path = lib/ext/lz4
+	url = https://github.com/Cyan4973/lz4.git
+[submodule "ext/bitshuffle"]
+	path = lib/ext/bitshuffle
+	url = https://github.com/kiyo-masui/bitshuffle.git
+[submodule "ext/zstd"]
+	path = lib/ext/zstd
+	url = https://github.com/facebook/zstd.git
+[submodule "ext/Turbo-Range-Coder"]
+	path = lib/ext/Turbo-Range-Coder
+	url = https://github.com/powturbo/Turbo-Range-Coder