diff --git a/plinth/locale/pl/LC_MESSAGES/django.po b/plinth/locale/pl/LC_MESSAGES/django.po
index ecfa99203..87e604db0 100644
--- a/plinth/locale/pl/LC_MESSAGES/django.po
+++ b/plinth/locale/pl/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-12-14 18:42-0500\n"
 "PO-Revision-Date: 2020-12-29 01:10+0000\n"
-"Last-Translator: ikmaak <info@ikmaak.nl>\n"
+"Last-Translator: n0nie4HP <szymanski@420blaze.it>\n"
 "Language-Team: Polish <https://hosted.weblate.org/projects/freedombox/"
 "freedombox/pl/>\n"
 "Language: pl\n"
@@ -761,7 +761,7 @@ msgstr "edytor"
 
 #: plinth/modules/bepasty/views.py:25
 msgid "viewer"
-msgstr ""
+msgstr "użytkownik"
 
 #: plinth/modules/bepasty/views.py:50
 msgid "Read"
@@ -939,7 +939,7 @@ msgstr ""
 
 #: plinth/modules/calibre/__init__.py:60 plinth/modules/calibre/manifest.py:9
 msgid "calibre"
-msgstr ""
+msgstr "calibre"
 
 #: plinth/modules/calibre/__init__.py:61
 msgid "E-book Library"
@@ -1017,7 +1017,7 @@ msgstr ""
 #: plinth/modules/calibre/views.py:64 plinth/modules/gitweb/views.py:138
 #, python-brace-format
 msgid "{name} deleted."
-msgstr ""
+msgstr "Usunięto {name}."
 
 #: plinth/modules/calibre/views.py:68 plinth/modules/gitweb/views.py:142
 #, python-brace-format
@@ -1369,19 +1369,19 @@ msgstr "nie udało się"
 
 #: plinth/modules/diagnostics/__init__.py:98
 msgid "error"
-msgstr ""
+msgstr "błąd"
 
 #. Translators: This is the unit of computer storage Mebibyte similar to
 #. Megabyte.
 #: plinth/modules/diagnostics/__init__.py:191
 msgid "MiB"
-msgstr ""
+msgstr "MiB"
 
 #. Translators: This is the unit of computer storage Gibibyte similar to
 #. Gigabyte.
 #: plinth/modules/diagnostics/__init__.py:196
 msgid "GiB"
-msgstr ""
+msgstr "GiB"
 
 #: plinth/modules/diagnostics/__init__.py:203
 msgid "You should disable some apps to reduce memory usage."
@@ -1423,6 +1423,9 @@ msgid ""
 "          App: %(app_name)s\n"
 "        "
 msgstr ""
+"\n"
+"          Aplikacja: %(app_name)s\n"
+"        "
 
 #: plinth/modules/diagnostics/templates/diagnostics_app.html:10
 msgid "Diagnostic Results"
@@ -1624,7 +1627,7 @@ msgstr "Użytkownik który był używany podczas zakladania konta."
 
 #: plinth/modules/dynamicdns/forms.py:65
 msgid "GnuDIP"
-msgstr ""
+msgstr "GnuDIP"
 
 #: plinth/modules/dynamicdns/forms.py:68
 #, fuzzy
@@ -1872,7 +1875,7 @@ msgstr "Dino"
 
 #: plinth/modules/ejabberd/manifest.py:85
 msgid "Gajim"
-msgstr ""
+msgstr "Gajim"
 
 #: plinth/modules/ejabberd/templates/ejabberd.html:18
 #, python-format