diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..8e84f05e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "third_party/fmt"]
+	path = third_party/fmt
+	url = https://github.com/fmtlib/fmt.git
diff --git a/third_party/fmt b/third_party/fmt
new file mode 160000
index 00000000..c98e5a08
--- /dev/null
+++ b/third_party/fmt
@@ -0,0 +1 @@
+Subproject commit c98e5a08a42f6d5fb93fade59154c1007e79722e