diff --git a/puppet/zulip_ops/files/postgresql/40-postgresql.conf.master b/puppet/zulip_ops/files/postgresql/40-postgresql.conf.master
index c24b37e081..5dda67ceda 100644
--- a/puppet/zulip_ops/files/postgresql/40-postgresql.conf.master
+++ b/puppet/zulip_ops/files/postgresql/40-postgresql.conf.master
@@ -1,10 +1,3 @@
-# Shared memory settings
-
-# Maximum total size of shared memory in pages (normally 4096 bytes)
-kernel.shmall = 6553600
-# Maximum size of shared memory segment in bytes
-kernel.shmmax = 26843545600
-
 # Virtual memory settings
 vm.swappiness = 0
 vm.overcommit_memory = 2
diff --git a/puppet/zulip_ops/files/postgresql/40-postgresql.conf.slave b/puppet/zulip_ops/files/postgresql/40-postgresql.conf.slave
index a883175e58..4ea5ff7f42 100644
--- a/puppet/zulip_ops/files/postgresql/40-postgresql.conf.slave
+++ b/puppet/zulip_ops/files/postgresql/40-postgresql.conf.slave
@@ -1,10 +1,3 @@
-# Shared memory settings for PostgreSQL
-
-# Maximum total size of shared memory in pages (normally 4096 bytes)
-kernel.shmall = 1703936
-# Maximum size of shared memory segment in bytes
-kernel.shmmax = 6979321856
-
 # Virtual memory settings
 vm.swappiness = 0
 vm.overcommit_memory = 2