diff --git a/deploy/files/impress.service b/deploy/files/impress.service
index 33a82e75..7f0ad300 100644
--- a/deploy/files/impress.service
+++ b/deploy/files/impress.service
@@ -11,6 +11,12 @@ Environment="RAILS_ENV=production"
 Environment="EXECJS_RUNTIME=Disabled"
 EnvironmentFile=/srv/impress/shared/production.env
 
+; Try not to go over 75% of the server's RAM, and kill the app at 80%.
+; NOTE: This assumes this is the main thing running on the box! If it were
+; running alongside e.g. a database, you'd want to constrain it differently.
+MemoryHigh=75%
+MemoryMax=80%
+
 ; Some security directives, adapted from Akkoma's service file, they seem like sensible defaults!
 ; Use private /tmp and /var/tmp folders inside a new file system namespace, which are discarded after the process stops.
 PrivateTmp=true