diff --git a/README.md b/README.md
index 161e6b1..c4e7f8e 100644
--- a/README.md
+++ b/README.md
@@ -92,7 +92,7 @@ or individually
 
 ```docker run --name redis -d redis:alpine3.16```
 
-```docker run --name postgres -e POSTGRES_PASSWORD=never_use_this_password_in_production -d postgres:alpine```
+```docker run --name postgres -e POSTGRES_PASSWORD=never_use_this_password_in_production -d postgres:alpine3.16```
 
 ```docker run -d --hostname my-rabbit --name rabbitmq rabbitmq:3```