diff --git a/po/pl.po b/po/pl.po
index 3f25f48a..81370068 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -8,8 +8,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gnome-calendar\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2017-01-20 22:53+0100\n"
-"PO-Revision-Date: 2017-01-20 22:54+0100\n"
+"POT-Creation-Date: 2017-03-02 01:47+0100\n"
+"PO-Revision-Date: 2017-03-02 01:48+0100\n"
 "Last-Translator: Piotr Drąg <piotrdrag@gmail.com>\n"
 "Language-Team: Polish <community-poland@mozilla.org>\n"
 "Language: pl\n"
@@ -23,7 +23,7 @@ msgstr ""
 #: ../data/org.gnome.Calendar.desktop.in.in.h:1
 #: ../data/org.gnome.Calendar.search-provider.ini.in.in.h:1
 #: ../data/ui/quick-add-popover.ui.h:3 ../data/ui/window.ui.h:4
-#: ../src/gcal-application.c:481
+#: ../src/gcal-application.c:474
 msgid "Calendar"
 msgstr "Kalendarz"
 
@@ -334,8 +334,8 @@ msgstr "Brak wyników"
 msgid "Try a different search"
 msgstr "Proszę spróbować innych słów"
 
-#: ../data/ui/source-dialog.ui.h:1 ../src/gcal-window.c:1152
-#: ../src/gcal-window.c:1156
+#: ../data/ui/source-dialog.ui.h:1 ../src/gcal-window.c:1153
+#: ../src/gcal-window.c:1157
 msgid "Undo"
 msgstr "Cofnij"
 
@@ -434,7 +434,7 @@ msgstr "Hasło"
 msgid "Connect"
 msgstr "Połącz"
 
-#: ../data/ui/time-selector.ui.h:1 ../src/views/gcal-week-grid.c:768
+#: ../data/ui/time-selector.ui.h:1 ../src/views/gcal-week-grid.c:772
 #: ../src/views/gcal-week-view.c:304
 msgid "00:00"
 msgstr "00∶00"
@@ -443,11 +443,11 @@ msgstr "00∶00"
 msgid ":"
 msgstr "∶"
 
-#: ../data/ui/time-selector.ui.h:3 ../src/views/gcal-week-view.c:443
+#: ../data/ui/time-selector.ui.h:3 ../src/views/gcal-week-view.c:445
 msgid "AM"
 msgstr "Przed południem"
 
-#: ../data/ui/time-selector.ui.h:4 ../src/views/gcal-week-view.c:443
+#: ../data/ui/time-selector.ui.h:4 ../src/views/gcal-week-view.c:445
 msgid "PM"
 msgstr "Po południu"
 
@@ -498,10 +498,20 @@ msgstr[0] "Inne wydarzenie"
 msgstr[1] "Pozostałe %d wydarzenia"
 msgstr[2] "Pozostałe %d wydarzeń"
 
-#: ../src/views/gcal-week-grid.c:765 ../src/views/gcal-week-view.c:301
+#: ../src/views/gcal-week-grid.c:769 ../src/views/gcal-week-view.c:301
 msgid "00 AM"
 msgstr "00 AM"
 
+#: ../src/views/gcal-week-header.c:870
+#, c-format
+msgid "week %d"
+msgstr "%d. tydzień"
+
+#: ../src/views/gcal-week-header.c:875
+#, c-format
+msgid "week %d / %d"
+msgstr "%d. tydzień z %d"
+
 #: ../src/gcal-application.c:102
 msgid "Display version number"
 msgstr "Wyświetla numer wersji"
@@ -514,21 +524,21 @@ msgstr "Otwiera kalendarz na podanej dacie"
 msgid "Open calendar showing the passed event"
 msgstr "Otwiera kalendarz na podanym wydarzeniu"
 
-#: ../src/gcal-application.c:322
+#: ../src/gcal-application.c:315
 msgid "— Calendar management"
 msgstr "— zarządzenie kalendarzem"
 
-#: ../src/gcal-application.c:469
+#: ../src/gcal-application.c:462
 #, c-format
 msgid "Copyright © %d The Calendar authors"
 msgstr "Copyright © %d Autorzy Kalendarza"
 
-#: ../src/gcal-application.c:475
+#: ../src/gcal-application.c:468
 #, c-format
 msgid "Copyright © %d–%d The Calendar authors"
 msgstr "Copyright © %d-%d Autorzy Kalendarza"
 
-#: ../src/gcal-application.c:488
+#: ../src/gcal-application.c:481
 msgid "translator-credits"
 msgstr ""
 "Piotr Drąg <piotrdrag@gmail.com>, 2012-2017\n"
@@ -579,6 +589,10 @@ msgstr "Wydarzenie bez nazwy"
 msgid "%s (this calendar is read-only)"
 msgstr "%s (ten kalendarz jest tylko do odczytu)"
 
+#. Translators:
+#. * this is the format string for representing a date consisting of a month name
+#. * and a date of month.
+#.
 #: ../src/gcal-quick-add-popover.c:231 ../src/gcal-quick-add-popover.c:261
 msgctxt "event date format"
 msgid "%B %d"
@@ -649,10 +663,10 @@ msgstr "%s AM"
 msgid "%s PM"
 msgstr "%s PM"
 
-#: ../src/gcal-window.c:1152
+#: ../src/gcal-window.c:1153
 msgid "Another event deleted"
 msgstr "Usunięto kolejne wydarzenie"
 
-#: ../src/gcal-window.c:1156
+#: ../src/gcal-window.c:1157
 msgid "Event deleted"
 msgstr "Usunięto wydarzenie"