diff --git a/.gitmodules b/.gitmodules
index f68b57fa80978..c8cd4d433a55b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -55,3 +55,6 @@
 [submodule "src/seastar"]
 	path = src/seastar
 	url = https://github.com/ceph/seastar.git
+[submodule "src/fmt"]
+	path = src/fmt
+	url = https://github.com/ceph/fmt.git
diff --git a/src/fmt b/src/fmt
new file mode 160000
index 0000000000000..f61e71ccb9ab2
--- /dev/null
+++ b/src/fmt
@@ -0,0 +1 @@
+Subproject commit f61e71ccb9ab253f6d76096b2d958caf38fcccaa