diff --git a/.gitmodules b/.gitmodules
index 2587b15..f2c0c4a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "third_party/xxHash"]
 	path = third_party/xxHash
 	url = https://github.com/Cyan4973/xxHash
+[submodule "third_party/base64"]
+	path = third_party/base64
+	url = https://github.com/aklomp/base64