diff --git a/srcpkgs/gdm/INSTALL b/srcpkgs/gdm/INSTALL
index 2efae5fa98..34b2615fb0 100644
--- a/srcpkgs/gdm/INSTALL
+++ b/srcpkgs/gdm/INSTALL
@@ -45,5 +45,8 @@ post)
 	chown gdm:gdm var/log/gdm
 
 	dconf update
+
+	# Use XDG_RUNTIME_DIR for gdm via pam_env(8)
+	echo "XDG_RUNTIME_DIR=/tmp/gdm-runtime-dir" > var/lib/gdm/.pam_environment.conf
 	;;
 esac
diff --git a/srcpkgs/gdm/template b/srcpkgs/gdm/template
index 4d9b1615d6..5cb17b97e2 100644
--- a/srcpkgs/gdm/template
+++ b/srcpkgs/gdm/template
@@ -1,7 +1,7 @@
 # Template file for 'gdm'
 pkgname=gdm
 version=3.14.1
-revision=1
+revision=2
 patch_args="-Np1"
 build_style=gnu-configure
 configure_args="$(vopt_enable gir introspection)