diff --git a/type/__matrix_synapse/files/homeserver.yaml.sh b/type/__matrix_synapse/files/homeserver.yaml.sh
index 0ad3c42..bc94391 100755
--- a/type/__matrix_synapse/files/homeserver.yaml.sh
+++ b/type/__matrix_synapse/files/homeserver.yaml.sh
@@ -835,6 +835,8 @@ database:
     host: "${DATABASE_HOST:?}"
     user: "${DATABASE_USER:?}"
     password: "$DATABASE_PASSWORD"
+    cp_min: ${DATABASE_CP_MIN:?}
+    cp_min: ${DATABASE_CP_MAX:?}
 EOF
 	;;
 	*)
diff --git a/type/__matrix_synapse/man.rst b/type/__matrix_synapse/man.rst
index e693809..a951d24 100644
--- a/type/__matrix_synapse/man.rst
+++ b/type/__matrix_synapse/man.rst
@@ -39,6 +39,12 @@ database-user
 database-password
   Database password, only used with PostgresSQL.
 
+database-connection-pool-min
+  The minimum number of connections in pool, defaults to 3.
+
+database-connection-pool-max
+  The maximum number of connections in pool, defaults to 5.
+
 ldap-uri
   Address of your LDAP server.
 
diff --git a/type/__matrix_synapse/manifest b/type/__matrix_synapse/manifest
index 91e92a1..055fc81 100755
--- a/type/__matrix_synapse/manifest
+++ b/type/__matrix_synapse/manifest
@@ -143,8 +143,10 @@ DATABASE_NAME=$(cat "$__object/parameter/database-name")
 DATABASE_HOST=$(cat "$__object/parameter/database-host")
 DATABASE_USER=$(cat "$__object/parameter/database-user")
 DATABASE_PASSWORD=$(cat "$__object/parameter/database-password")
+DATABASE_CP_MIN=$(cat "$__object/parameter/database-connection-pool-min")
+DATABASE_CP_MAX=$(cat "$__object/parameter/database-connection-pool-max")
 export DATABASE_ENGINE DATABASE_NAME DATABASE_HOST DATABASE_USER \
-	DATABASE_PASSWORD
+	DATABASE_PASSWORD DATABASE_CP_MIN DATABASE_CP_MAX
 
 # LDAP-based authentication.
 if [ -f "$__object/parameter/enable-ldap-auth" ]; then
diff --git a/type/__matrix_synapse/parameter/default/database-connection-pool-max b/type/__matrix_synapse/parameter/default/database-connection-pool-max
new file mode 100644
index 0000000..7ed6ff8
--- /dev/null
+++ b/type/__matrix_synapse/parameter/default/database-connection-pool-max
@@ -0,0 +1 @@
+5
diff --git a/type/__matrix_synapse/parameter/default/database-connection-pool-min b/type/__matrix_synapse/parameter/default/database-connection-pool-min
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/type/__matrix_synapse/parameter/default/database-connection-pool-min
@@ -0,0 +1 @@
+3
diff --git a/type/__matrix_synapse/parameter/optional b/type/__matrix_synapse/parameter/optional
index a616538..1378365 100644
--- a/type/__matrix_synapse/parameter/optional
+++ b/type/__matrix_synapse/parameter/optional
@@ -1,6 +1,8 @@
 database-host
 database-user
 database-password
+database-connection-pool-min
+database-connection-pool-max
 ldap-uri
 ldap-base-dn
 ldap-uid-attribute