diff --git a/src/effects/backgroundcontrast/metadata.json b/src/effects/backgroundcontrast/metadata.json
index 0dd2c61331..6c33cc1bcc 100644
--- a/src/effects/backgroundcontrast/metadata.json
+++ b/src/effects/backgroundcontrast/metadata.json
@@ -53,6 +53,7 @@
         "Name[it]": "Contrasto dello sfondo",
         "Name[ka]": "ფონის კონტრასტი",
         "Name[nl]": "Contrast in achtergrond",
+        "Name[pl]": "Kontrast tła",
         "Name[pt]": "Contraste do Fundo",
         "Name[sl]": "Kontrast ozadja",
         "Name[ta]": "பின்புல நிறமாறுபாடு",
diff --git a/src/effects/morphingpopups/package/metadata.json b/src/effects/morphingpopups/package/metadata.json
index 532be158c8..bd1bd90ed4 100644
--- a/src/effects/morphingpopups/package/metadata.json
+++ b/src/effects/morphingpopups/package/metadata.json
@@ -86,6 +86,7 @@
         "Name[it]": "Finestre a comparsa che si trasformano",
         "Name[ka]": "ტრანსფორმირებადი მხტუნარები",
         "Name[nl]": "Morphing pop-ups",
+        "Name[pl]": "Zmiennokształtne okna",
         "Name[pt]": "Janelas Mutantes",
         "Name[sl]": "Pogovorna okna pretvorb",
         "Name[tr]": "Dönüşen Açılır Pencereler",
diff --git a/src/effects/slidingpopups/metadata.json b/src/effects/slidingpopups/metadata.json
index 2aecef33c7..3f1e0e2b2e 100644
--- a/src/effects/slidingpopups/metadata.json
+++ b/src/effects/slidingpopups/metadata.json
@@ -53,6 +53,7 @@
         "Name[it]": "Finestre a comparsa che scivolano",
         "Name[ka]": "მცურავი მხტუნარები",
         "Name[nl]": "Schuivende pop-ups",
+        "Name[pl]": "Wysuwanie okien",
         "Name[pt]": "Janelas Deslizantes",
         "Name[sl]": "Drsne pretvorbe",
         "Name[tr]": "Kayan Açılır Pencereler",