diff --git a/pkg/umorse/Makefile b/pkg/umorse/Makefile
index 25c241d2c4..cfcd1ac358 100644
--- a/pkg/umorse/Makefile
+++ b/pkg/umorse/Makefile
@@ -1,6 +1,6 @@
 PKG_NAME=umorse
 PKG_URL=https://github.com/smlng/uMorse
-PKG_VERSION=1dc14abdba22cca2f7efc053b2bce327bc7db97e
+PKG_VERSION=ad941aa786d8ae4371016a30c4ca8ed5ccb39e3e
 PKG_LICENSE=MIT
 
 include $(RIOTBASE)/pkg/pkg.mk