diff --git a/symfony/monolog-bundle/3.1/config/packages/prod/monolog.yaml b/symfony/monolog-bundle/3.1/config/packages/prod/monolog.yaml
index 1677234d..96dbf969 100644
--- a/symfony/monolog-bundle/3.1/config/packages/prod/monolog.yaml
+++ b/symfony/monolog-bundle/3.1/config/packages/prod/monolog.yaml
@@ -15,3 +15,11 @@ monolog:
             type: console
             process_psr_3_messages: false
             channels: ["!event", "!doctrine"]
+        deprecation:
+            type: stream
+            path: "%kernel.logs_dir%/%kernel.environment%.deprecations.log"
+        deprecation_filter:
+            type: filter
+            handler: deprecation
+            max_level: info
+            channels: ["php"]