diff --git a/Ports/m4/package.sh b/Ports/m4/package.sh
index 4f68243430..469b2bcd9d 100755
--- a/Ports/m4/package.sh
+++ b/Ports/m4/package.sh
@@ -1,14 +1,11 @@
 #!/usr/bin/env -S bash ../.port_include.sh
 port='m4'
 version='1.4.19'
+files="https://ftpmirror.gnu.org/gnu/m4/m4-${version}.tar.gz m4-${version}.tar.gz 3be4a26d825ffdfda52a56fc43246456989a3630093cced3fbddf4771ee58a70"
+auth_type='sha256'
 useconfigure='true'
 use_fresh_config_sub='true'
 config_sub_paths=("build-aux/config.sub")
-files="https://ftpmirror.gnu.org/gnu/m4/m4-${version}.tar.gz m4-${version}.tar.gz
-https://ftpmirror.gnu.org/gnu/m4/m4-${version}.tar.gz.sig m4-${version}.tar.gz.sig
-https://ftpmirror.gnu.org/gnu/gnu-keyring.gpg gnu-keyring.gpg"
-auth_type="sig"
-auth_opts=("--keyring" "./gnu-keyring.gpg" "m4-${version}.tar.gz.sig")
 
 # Stack overflow detection needs siginfo and sbrk, neither of which we support
 export M4_cv_use_stackovf=no