diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..22bb8f04e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "cde/programs/dtksh/ksh93"]
+	path = cde/programs/dtksh/ksh93
+	url = https://github.com/ksh93/ksh.git
diff --git a/cde/programs/dtksh/ksh93 b/cde/programs/dtksh/ksh93
new file mode 160000
index 000000000..f207cd578
--- /dev/null
+++ b/cde/programs/dtksh/ksh93
@@ -0,0 +1 @@
+Subproject commit f207cd57879ea248f33d84ad9018577b53de3a5a