diff --git a/.gitmodules b/.gitmodules
index fc73284..5f9a01b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,7 @@
 [submodule "external/mesytec-mvlc"]
 	path = external/mesytec-mvlc
 	url = ../mesytec-mvlc.git
+
+[submodule "external/nng/extern/nng-wolfssl"]
+	path = external/nng/extern/nng-wolfssl
+	url = https://github.com/staysail/nng-wolfssl