diff --git a/data/org.gnome.Shell@wayland.service.in b/data/org.gnome.Shell@wayland.service.in
index 28ef7154d..427e3c807 100644
--- a/data/org.gnome.Shell@wayland.service.in
+++ b/data/org.gnome.Shell@wayland.service.in
@@ -14,6 +14,7 @@ PartOf=gnome-session-initialized.target
 Before=gnome-session-initialized.target
 
 [Service]
+Slice=session.slice
 Type=notify
 # NOTE: This can be replaced with ConditionEnvironment=XDG_SESSION_TYPE=%I
 #       with systemd >= 245. Also, the current solution is kind of painful
diff --git a/data/org.gnome.Shell@x11.service.in b/data/org.gnome.Shell@x11.service.in
index be2d1ff91..a70f24909 100644
--- a/data/org.gnome.Shell@x11.service.in
+++ b/data/org.gnome.Shell@x11.service.in
@@ -18,6 +18,7 @@ StartLimitIntervalSec=15s
 StartLimitBurst=3
 
 [Service]
+Slice=session.slice
 Type=notify
 # NOTE: This can be replaced with ConditionEnvironment=XDG_SESSION_TYPE=%I
 #       with systemd >= 245. Also, the current solution is kind of painful