diff --git a/extra/gperf/sources b/extra/gperf/sources
index 6ac8e1e1..2ead637b 100644
--- a/extra/gperf/sources
+++ b/extra/gperf/sources
@@ -1 +1 @@
-ftp://ftp.gnu.org/gnu/gperf/gperf-3.1.tar.gz
+https://ftp.gnu.org/gnu/gperf/gperf-3.1.tar.gz