diff --git a/tcl.spec b/tcl.spec
index 2acd7ac..efad101 100644
--- a/tcl.spec
+++ b/tcl.spec
@@ -36,7 +36,7 @@ Obsoletes:      tcl-64bit
 %endif
 #
 PreReq:         /bin/rm
-Source0:        ftp://ftp.tcl.tk/pub/tcl/tcl8_6/%{name}%{version}%{rrc}-src.tar.gz
+Source0:        https://prdownloads.sourceforge.net/tcl/tcl8.6.7-src.tar.gz
 Source1:        tcl-rpmlintrc
 Source2:        baselibs.conf
 Source3:        macros.tcl