diff --git a/.gitmodules b/.gitmodules
index 33e66a8..b1dc060 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,6 @@
 [submodule "external/src/cppzmq"]
 	path = external/src/cppzmq
 	url = https://github.com/SChernykh/cppzmq
+[submodule "external/src/libsodium"]
+	path = external/src/libsodium
+	url = https://github.com/SChernykh/libsodium
diff --git a/external/src/libsodium b/external/src/libsodium
new file mode 160000
index 0000000..fe1d6d1
--- /dev/null
+++ b/external/src/libsodium
@@ -0,0 +1 @@
+Subproject commit fe1d6d11aabcbd191abd3b8df99abf18a726c036