diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f5d1a959..67ca1894 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,6 +36,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # Generate missing locales in the container. Programs are executed with
+      # en_US.UTF-8 locale, this locale must be defined in the container in
+      # order to be restored by Rift without errors when manipulating dates.
+      - name: Install locales
+        run: |
+          dnf install -y glibc-locale-source glibc-langpack-en
+          localedef -i en_US -f UTF-8 en_US.UTF-8
+
       # Mount binfmt_misc virtual FS to register support of additional binary
       # formats for multi-arch builds.
       - name: Mount binfmt_misc virtual filesystem
diff --git a/lib/rift/RPM.py b/lib/rift/RPM.py
index 7cfa3eae..afec03a5 100644
--- a/lib/rift/RPM.py
+++ b/lib/rift/RPM.py
@@ -40,6 +40,7 @@
 import shutil
 from subprocess import Popen, PIPE, STDOUT, run, CalledProcessError
 import time
+import locale
 
 import rpm
 
@@ -364,7 +365,14 @@ def add_changelog_entry(self, userstring, comment, bump=False):
         if bump:
             self.bump_release()
 
+        # Temporarily set basic C locale to generate date representation in
+        # changelog.
+        current_locale = locale.getlocale(locale.LC_TIME)
+        locale.setlocale(locale.LC_TIME, 'C')
         date = time.strftime("%a %b %d %Y", time.gmtime())
+        # Immediately restore previous locale.
+        locale.setlocale(locale.LC_TIME, current_locale)
+
         newchangelogentry = f"* {date} {userstring} - {self.evr}\n{comment}\n"
         chlg_match = None
         for i, _ in enumerate(self.lines):
diff --git a/tests/Controller.py b/tests/Controller.py
index ac952b68..585a7cb3 100644
--- a/tests/Controller.py
+++ b/tests/Controller.py
@@ -22,7 +22,7 @@
     make_parser,
 )
 from rift.Package import Package
-from rift.RPM import RPM
+from rift.RPM import RPM, Spec
 from rift.run import RunResult
 from rift import RiftError
 
@@ -983,6 +983,63 @@ def test_action_sync_missing_output_parent(self):
             main(['sync'])
 
 
+class ControllerProjectActionChangelogTest(RiftProjectTestCase):
+    """
+    Tests class for Controller action changelog
+    """
+
+    def test_action_changelog_without_pkg(self):
+        """changelog without package fails """
+        with self.assertRaisesRegex(SystemExit, "2"):
+            main(['changelog'])
+
+    def test_action_changelog_without_comment(self):
+        """changelog without comment fails """
+        with self.assertRaisesRegex(SystemExit, "2"):
+            main(['changelog', 'pkg'])
+
+    def test_action_changelog_without_maintainer(self):
+        """changelog without maintainer """
+        with self.assertRaisesRegex(RiftError, "You must specify a maintainer"):
+            main(['changelog', 'pkg', '-c', 'basic change'])
+
+    def test_action_changelog_pkg_not_found(self):
+        """changelog package not found"""
+        with self.assertRaisesRegex(
+            RiftError,
+            "Package 'pkg' directory does not exist"):
+            main(['changelog', 'pkg', '-c', 'basic change', '-t', 'Myself'])
+
+    def test_action_changelog(self):
+        """simple changelog"""
+        self.make_pkg()
+        self.assertEqual(
+            main(['changelog', 'pkg', '-c', 'basic change', '-t', 'Myself']), 0)
+        spec = Spec(filepath=self.pkgspecs['pkg'])
+        spec.load()
+        self.assertEqual(spec.changelog_name, 'Myself <buddy@somewhere.org> - 1.0-1')
+        self.assertEqual(spec.version, '1.0')
+        self.assertEqual(spec.release, '1')
+
+    def test_action_changelog_bump(self):
+        """simple changelog with bump"""
+        self.make_pkg()
+        self.assertEqual(
+            main(['changelog', 'pkg', '-c', 'basic change', '-t', 'Myself', '--bump']),
+            0)
+        spec = Spec(filepath=self.pkgspecs['pkg'])
+        spec.load()
+        self.assertEqual(spec.changelog_name, 'Myself <buddy@somewhere.org> - 1.0-2')
+        self.assertEqual(spec.version, '1.0')
+        self.assertEqual(spec.release, '2')
+
+    def test_action_changelog_unknown_maintainer(self):
+        """changelog with unknown maintainer"""
+        self.make_pkg()
+        with self.assertRaises(TypeError):
+            main(['changelog', 'pkg', '-c', 'basic change', '-t', 'Fail'])
+
+
 class ControllerArgumentsTest(RiftTestCase):
     """ Arguments parsing tests for Controller module"""