diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d1a8872..3574246d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to
 ### Fixed 
 
 - ✅(backend) reduce flakiness on backend test #1769
+- 🐛(backend) fix TRASHBIN_CUTOFF_DAYS type error #1778
 
 ### Security
 
diff --git a/src/backend/impress/settings.py b/src/backend/impress/settings.py
index 5f74d7d5..33228b05 100755
--- a/src/backend/impress/settings.py
+++ b/src/backend/impress/settings.py
@@ -453,7 +453,7 @@ class Base(Configuration):
         "REDOC_DIST": "SIDECAR",
     }
 
-    TRASHBIN_CUTOFF_DAYS = values.Value(
+    TRASHBIN_CUTOFF_DAYS = values.IntegerValue(
         30, environ_name="TRASHBIN_CUTOFF_DAYS", environ_prefix=None
     )