diff --git a/registry.txt b/registry.txt
index 1379761c..f304e7ea 100644
--- a/registry.txt
+++ b/registry.txt
@@ -6624,3 +6624,4 @@ https://github.com/Crazy-Max-Blog/CrazyHC595.git|Contributed|CrazyHC595
 https://github.com/kmilo17pet/qlibs-cpp.git|Contributed|qlibs
 https://github.com/GuruSR/SmallRTC.git|Contributed|SmallRTC
 https://github.com/shigobu/CH9329_Keyboard.git|Contributed|CH9329_Keyboard
+https://github.com/mkeras/pubsubclient.git|Contributed|PubSubClient_for_protobuf