diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75c1ee04..d13ae497 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- n/a
+### Fixed
+
+- Added a missing dependency declaration on `scandir` for Python versions older than 3.5.
 
 ## [2.10.0] - 2021-08-10
 
diff --git a/requirements.txt b/requirements.txt
index d36700a5..7b7d9b78 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ koji>=1.18
 six
 pushcollector
 PyYAML
+scandir; python_version < '3.5'
 frozendict; python_version >= '3.6'
 frozenlist2
 python-dateutil