diff --git a/.gitmodules b/.gitmodules
index adaec12d..abad11a9 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -38,3 +38,6 @@
 [submodule ".vim/bundle/vim-ctrlp"]
 	path = .vim/bundle/vim-ctrlp
 	url = https://github.com/kien/ctrlp.vim.git
+[submodule "tools/icdiff.git"]
+	path = tools/icdiff.git
+	url = https://github.com/jeffkaufman/icdiff.git
diff --git a/tools/icdiff b/tools/icdiff
new file mode 120000
index 00000000..d7a08b93
--- /dev/null
+++ b/tools/icdiff
@@ -0,0 +1 @@
+icdiff.git/icdiff
\ No newline at end of file
diff --git a/tools/icdiff.git b/tools/icdiff.git
new file mode 160000
index 00000000..0a27bea0
--- /dev/null
+++ b/tools/icdiff.git
@@ -0,0 +1 @@
+Subproject commit 0a27bea010fe3be5589840b9850bb0f883f031c7