diff --git a/pg_stat_monitor--1.0.13.sql.in b/pg_stat_monitor--1.0.13.sql.in
index 5de6083e9ce4..1ba41ddb399e 100644
--- a/pg_stat_monitor--1.0.13.sql.in
+++ b/pg_stat_monitor--1.0.13.sql.in
@@ -89,7 +89,7 @@ RETURNS SETOF record
 AS 'MODULE_PATHNAME', 'pg_stat_monitor'
 LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION get_state(state_code int8) RETURNS TEXT AS
+CREATE FUNCTION get_state(state_code int8) RETURNS TEXT AS
 $$
 SELECT
 	CASE
@@ -102,7 +102,7 @@ SELECT
 $$
 LANGUAGE SQL PARALLEL SAFE;
 
-CREATE or REPLACE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
+CREATE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
 $$
 SELECT
 	CASE
@@ -225,7 +225,7 @@ SELECT
 $$
 LANGUAGE SQL PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION histogram(_bucket int, _quryid text)
+CREATE FUNCTION histogram(_bucket int, _quryid text)
 RETURNS SETOF RECORD AS $$
 DECLARE
  rec record;
diff --git a/pg_stat_monitor--1.0.14.sql.in b/pg_stat_monitor--1.0.14.sql.in
index 0bbb0cefaedd..d3268268dd13 100644
--- a/pg_stat_monitor--1.0.14.sql.in
+++ b/pg_stat_monitor--1.0.14.sql.in
@@ -89,7 +89,7 @@ RETURNS SETOF record
 AS 'MODULE_PATHNAME', 'pg_stat_monitor'
 LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION get_state(state_code int8) RETURNS TEXT AS
+CREATE FUNCTION get_state(state_code int8) RETURNS TEXT AS
 $$
 SELECT
 	CASE
@@ -102,7 +102,7 @@ SELECT
 $$
 LANGUAGE SQL PARALLEL SAFE;
 
-CREATE or REPLACE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
+CREATE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
 $$
 SELECT
 	CASE
@@ -226,7 +226,7 @@ SELECT
 $$
 LANGUAGE SQL PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION histogram(_bucket int, _quryid text)
+CREATE FUNCTION histogram(_bucket int, _quryid text)
 RETURNS SETOF RECORD AS $$
 DECLARE
  rec record;
diff --git a/pg_stat_monitor--1.0.sql.in b/pg_stat_monitor--1.0.sql.in
index fda49f7cd26f..909100a6ddf1 100644
--- a/pg_stat_monitor--1.0.sql.in
+++ b/pg_stat_monitor--1.0.sql.in
@@ -86,7 +86,7 @@ RETURNS SETOF record
 AS 'MODULE_PATHNAME', 'pg_stat_monitor'
 LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION get_state(state_code int8) RETURNS TEXT AS
+CREATE FUNCTION get_state(state_code int8) RETURNS TEXT AS
 $$
 SELECT
 	CASE
@@ -99,7 +99,7 @@ SELECT
 $$
 LANGUAGE SQL PARALLEL SAFE;
 
-CREATE or REPLACE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
+CREATE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
 $$
 SELECT
 	CASE
@@ -212,7 +212,7 @@ SELECT
 $$
 LANGUAGE SQL PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION histogram(_bucket int, _quryid text)
+CREATE FUNCTION histogram(_bucket int, _quryid text)
 RETURNS SETOF RECORD AS $$
 DECLARE
  rec record;