diff --git a/pkgs/applications/radio/wsjtx/default.nix b/pkgs/applications/radio/wsjtx/default.nix
index a42513cbf613..6aabb7f824eb 100644
--- a/pkgs/applications/radio/wsjtx/default.nix
+++ b/pkgs/applications/radio/wsjtx/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   version = "2.7.0";
 
   src = fetchgit {
-    url = "http://git.code.sf.net/p/wsjt/wsjtx";
+    url = "https://git.code.sf.net/p/wsjt/wsjtx";
     rev = "wsjtx-${version}";
     hash = "sha256-AAPZTJUhz3x/28B9rk2uwFs1bkcEvaj+hOzAjpsFALQ=";
   };