diff --git a/packages/dbos-compiler/templates/dbos.create.liquid b/packages/dbos-compiler/templates/dbos.create.liquid
index 014cc2c2f..9913b150d 100644
--- a/packages/dbos-compiler/templates/dbos.create.liquid
+++ b/packages/dbos-compiler/templates/dbos.create.liquid
@@ -1,7 +1,7 @@
 CREATE EXTENSION IF NOT EXISTS plv8;
 CREATE SCHEMA IF NOT EXISTS dbos;
 
-CREATE FUNCTION dbos.{{appVersion}}check_execution(_workflow_uuid TEXT, _function_id INT, preset BOOLEAN)
+CREATE OR REPLACE FUNCTION dbos.{{appVersion}}check_execution(_workflow_uuid TEXT, _function_id INT, preset BOOLEAN)
 RETURNS JSONB
 LANGUAGE plpgsql
 AS $$
@@ -30,7 +30,7 @@ BEGIN
 END;
 $$;
 
-CREATE FUNCTION dbos.{{appVersion}}flush_buffered_results(
+CREATE OR REPLACE FUNCTION dbos.{{appVersion}}flush_buffered_results(
     workflow_uuid TEXT,
     buffered_results JSONB
 ) RETURNS void AS $$ 
@@ -44,7 +44,7 @@ CREATE FUNCTION dbos.{{appVersion}}flush_buffered_results(
     }
 $$ LANGUAGE plv8;
 
-CREATE FUNCTION dbos.{{appVersion}}run_init() RETURNS VOID AS $$
+CREATE OR REPLACE FUNCTION dbos.{{appVersion}}run_init() RETURNS VOID AS $$
 
     function $run(workflow_uuid, _context, $func) {
         try {
diff --git a/packages/dbos-compiler/templates/method.create.liquid b/packages/dbos-compiler/templates/method.create.liquid
index 4cbfab966..d410b594b 100644
--- a/packages/dbos-compiler/templates/method.create.liquid
+++ b/packages/dbos-compiler/templates/method.create.liquid
@@ -1,4 +1,4 @@
-CREATE FUNCTION "{{appVersion}}{{className}}_{{methodName}}_f"(
+CREATE OR REPLACE FUNCTION "{{appVersion}}{{className}}_{{methodName}}_f"(
     _workflow_uuid TEXT,
     _context JSONB,
     _params JSONB
@@ -14,7 +14,7 @@ CREATE FUNCTION "{{appVersion}}{{className}}_{{methodName}}_f"(
 
 $$ LANGUAGE plv8;
 
-CREATE PROCEDURE "{{appVersion}}{{className}}_{{methodName}}_p"(
+CREATE OR REPLACE PROCEDURE "{{appVersion}}{{className}}_{{methodName}}_p"(
     {% unless readOnly %}buffered_results JSONB,{% endunless %}
     _workflow_uuid TEXT, 
     _function_id INT, 
diff --git a/packages/dbos-compiler/templates/module.create.liquid b/packages/dbos-compiler/templates/module.create.liquid
index bc182a4ca..cd977aa28 100644
--- a/packages/dbos-compiler/templates/module.create.liquid
+++ b/packages/dbos-compiler/templates/module.create.liquid
@@ -1,4 +1,4 @@
-CREATE FUNCTION "{{appVersion}}{{moduleName}}_init"() RETURNS VOID AS $$
+CREATE OR REPLACE FUNCTION "{{appVersion}}{{moduleName}}_init"() RETURNS VOID AS $$
 
 var exports = {};