diff --git a/tools/gitlab/build-linux b/tools/gitlab/build-linux
index 659ff0a0c17..d77ca9cdb8e 100755
--- a/tools/gitlab/build-linux
+++ b/tools/gitlab/build-linux
@@ -7,7 +7,7 @@ set -Eeuxo pipefail
 
 ./tools/make_requests
 ./tools/make_makefiles
-autoreconf
+autoreconf -f
 
 cd build64
 ../configure -q -C --enable-win64 --enable-werror --with-mingw
diff --git a/tools/gitlab/build-mac b/tools/gitlab/build-mac
index 20c1054150e..5c37aa6bcc9 100755
--- a/tools/gitlab/build-mac
+++ b/tools/gitlab/build-mac
@@ -7,7 +7,7 @@ set -Eeuxo pipefail
 
 ./tools/make_requests
 ./tools/make_makefiles
-autoreconf
+autoreconf -f
 
 cd build64
 ../configure -C --enable-win64 --with-mingw BISON=/usr/local/opt/bison/bin/bison