diff --git a/README.txt b/README.txt
index 2ebfba1..b59bd55 100644
--- a/README.txt
+++ b/README.txt
@@ -1,5 +1,5 @@
 This Library is no longer in use, we haven't sold the original style Motorshields for many many years.
 
-Apparently they are now natively supported in http://www.airspayce.com/mikem/arduino/AccelStepper/
+Apparently they are now natively supported in https://www.airspayce.com/mikem/arduino/AccelStepper/
 
 So please go there :)