diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 91dde495..00000000
--- a/.gitmodules
+++ /dev/null
@@ -1,6 +0,0 @@
-[submodule "externals/fmt"]
-	path = externals/fmt
-	url = https://github.com/fmtlib/fmt.git
-[submodule "externals/xbyak"]
-	path = externals/xbyak
-	url = https://github.com/herumi/xbyak