diff --git a/vendor/golang.org/x/text/unicode/bidi/core.go b/vendor/golang.org/x/text/unicode/bidi/core.go
index d4c1399..48d1440 100644
--- a/vendor/golang.org/x/text/unicode/bidi/core.go
+++ b/vendor/golang.org/x/text/unicode/bidi/core.go
@@ -7,7 +7,7 @@
 import "log"
 
 // This implementation is a port based on the reference implementation found at:
-// http://www.unicode.org/Public/PROGRAMS/BidiReferenceJava/
+// https://www.unicode.org/Public/PROGRAMS/BidiReferenceJava/
 //
 // described in Unicode Bidirectional Algorithm (UAX #9).
 //