diff --git a/registry.txt b/registry.txt
index 3cfdb6dc..d2b06a30 100644
--- a/registry.txt
+++ b/registry.txt
@@ -5202,3 +5202,4 @@ https://github.com/DanForever/DF-Print.git|Contributed|DF-Print
 https://github.com/khoih-prog/AsyncTCP_RP2040W.git|Contributed|AsyncTCP_RP2040W
 https://github.com/khoih-prog/AsyncWebServer_RP2040W.git|Contributed|AsyncWebServer_RP2040W
 https://github.com/khoih-prog/AsyncHTTPRequest_RP2040W.git|Contributed|AsyncHTTPRequest_RP2040W
+https://github.com/fatlab101/FixedString.git|Contributed|FixedString