diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3193c889..a7a5343c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,8 @@ ml).
 
 ## testing
 - [add] #305 add button download iso Workbench.
-- [add] #306 add link for download json snapshot
+- [add] #306 add link for download json snapshot.
+- [add] #308 add sentry.
 - [changed] #302 add system uuid for check the identity of one device.
 
 ## [2.2.0] - 2022-06-24
diff --git a/requirements.txt b/requirements.txt
index aec82953..6f4bb6d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,3 +46,4 @@ pyjwt==2.4.0
 pint==0.9
 py-dmidecode==0.1.0
 sentry_sdk==1.6.0
+blinker==1.4