diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b7d638..c1933c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@ CHANGELOG for 1.x
 ## v1.2.5 - (2024-04-22)
 ### Added
 - Adding scripts to the list of scripts that can be executed in `script-src` Nelmio Security recommendations config.
+- Add missing sentry settings to readme Sentry configuration part
 
 ## v1.2.4 - (2024-04-22)
 
diff --git a/README.md b/README.md
index 269a60e..1325717 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,29 @@ services:
         factory: [ '@Smart\CoreBundle\Sentry\SentryCallback', 'getBeforeSend' ]
 ```
 
+Also declare the following in your `config/packages/monolog.yaml` :
+
+```yaml
+when@prod:
+    monolog:
+        handlers:
+            # other handlers
+            sentry:
+                type: service
+                id: Sentry\Monolog\Handler
+```
+
+And define the `Sentry\Monolog\Handler` service in your services.yaml : 
+
+```yaml
+services:
+    # other services
+    Sentry\Monolog\Handler:
+        arguments:
+            $hub: '@Sentry\State\HubInterface'
+            $level: !php/const Monolog\Logger::ERROR
+```
+
 ### Nelmio Security recommendations
 
 We recommand to setup a Content Security Policy in addition to the config generated by the nelmio security recipe: