diff --git a/sys-apps/turnstile/turnstile-0.1.10.ebuild b/sys-apps/turnstile/turnstile-0.1.10.ebuild
index 864dd1f..e1f8992 100644
--- a/sys-apps/turnstile/turnstile-0.1.10.ebuild
+++ b/sys-apps/turnstile/turnstile-0.1.10.ebuild
@@ -31,3 +31,9 @@ src_configure() {
 	)
 	meson_src_configure
 }
+
+pkg_postinst() {
+	ewarn "To support session tracking, please append"
+	ewarn "'session optional pam_turnstile.so' to /etc/pam.d/system-login"
+	ewarn
+}
diff --git a/sys-apps/turnstile/turnstile-9999.ebuild b/sys-apps/turnstile/turnstile-9999.ebuild
index 864dd1f..e1f8992 100644
--- a/sys-apps/turnstile/turnstile-9999.ebuild
+++ b/sys-apps/turnstile/turnstile-9999.ebuild
@@ -31,3 +31,9 @@ src_configure() {
 	)
 	meson_src_configure
 }
+
+pkg_postinst() {
+	ewarn "To support session tracking, please append"
+	ewarn "'session optional pam_turnstile.so' to /etc/pam.d/system-login"
+	ewarn
+}