diff --git a/.gitmodules b/.gitmodules
index e8611bf..cd34bf7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "protobuf"]
 	path = protobuf
 	url = ../protobuf
+[submodule "zeromq"]
+	path = zeromq
+	url = ../zeromq4-x
diff --git a/zeromq b/zeromq
new file mode 160000
index 0000000..9513148
--- /dev/null
+++ b/zeromq
@@ -0,0 +1 @@
+Subproject commit 9513148e27b48e47f9b10274da4df6443a67c986