diff --git a/.gitmodules b/.gitmodules
index 0c0c45228..c4b56bbf2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -2,3 +2,6 @@
 	path = clients/rtds
 	url = git@github.com:RWTH-ACS/GTFPGA.git
 	branch = master
+[submodule "contrib/websocket/flot"]
+	path = contrib/websocket/flot
+	url = https://github.com/flot/flot.git
diff --git a/contrib/websocket/flot b/contrib/websocket/flot
new file mode 160000
index 000000000..958e5fd43
--- /dev/null
+++ b/contrib/websocket/flot
@@ -0,0 +1 @@
+Subproject commit 958e5fd43c6dff4bab3e1fd5cb6109df5c1e8003