diff --git a/chrome.manifest b/chrome.manifest
index 55b1d3a..467156c 100644
--- a/chrome.manifest
+++ b/chrome.manifest
@@ -5,6 +5,7 @@ locale    mailhops   en             jar:chrome/mailhops.jar!/locale/en/
 locale    mailhops   es             jar:chrome/mailhops.jar!/locale/es/
 locale    mailhops   fr             jar:chrome/mailhops.jar!/locale/fr/
 locale    mailhops   ja             jar:chrome/mailhops.jar!/locale/ja/
+locale    mailhops   pl             jar:chrome/mailhops.jar!/locale/pl/
 locale    mailhops   pt-BR          jar:chrome/mailhops.jar!/locale/pt-BR/
 locale    mailhops   ru             jar:chrome/mailhops.jar!/locale/ru/
 locale    mailhops   zh-CN          jar:chrome/mailhops.jar!/locale/zh-CN/
diff --git a/chrome/content/preferences.xul b/chrome/content/preferences.xul
index d409841..1e85117 100644
--- a/chrome/content/preferences.xul
+++ b/chrome/content/preferences.xul
@@ -356,6 +356,7 @@
 					<radio value="es" label="Spanish"/>
 					<radio value="fr" label="French"/>
 					<radio value="ja" label="Japanese"/>
+					<radio value="pl" label="Polish"/>
 					<radio value="pt-BR" label="Portuguese"/>
 					<radio value="ru" label="Russian"/>
 					<radio value="zh-CH" label="Chinese"/>
diff --git a/chrome/locale/pl/strings.dtd b/chrome/locale/pl/strings.dtd
new file mode 100644
index 0000000..7c84506
--- /dev/null
+++ b/chrome/locale/pl/strings.dtd
@@ -0,0 +1,9 @@
+<!ENTITY mailhops_header_route_label           "Trasa">
+<!ENTITY mailhops_header_auth_label            "Mailer/Auth">
+<!ENTITY mailhops_header_lists_label           "Listy">
+<!ENTITY mailhops_header_meta_label            "Meta">
+
+<!ENTITY mailhops_route_nav_map_label          "mapa">
+<!ENTITY mailhops_route_nav_details_label      "szczegóły">
+<!ENTITY mailhops_route_nav_refresh_label      "odśwież">
+<!ENTITY mailhops_route_nav_options_label      "opcje">
diff --git a/chrome/locale/pl/strings.properties b/chrome/locale/pl/strings.properties
new file mode 100644
index 0000000..0546f39
--- /dev/null
+++ b/chrome/locale/pl/strings.properties
@@ -0,0 +1,8 @@
+mailhops_header_route_label=Trasa
+mailhops_header_auth_label=Mailer/Auth
+mailhops_header_lists_label=Listy
+mailhops_header_meta_label=Meta
+mailhops_route_nav_map_label=mapa
+mailhops_route_nav_details_label=szczegóły
+mailhops_route_nav_refresh_label=odśwież
+mailhops_route_nav_options_label=opcje
diff --git a/install.rdf b/install.rdf
index 2d59802..6554fc2 100644
--- a/install.rdf
+++ b/install.rdf
@@ -73,6 +73,14 @@
 		  </Description>
 		</em:localized>
 
+		<em:localized>
+		  <Description>
+		    <em:locale>pl</em:locale>
+		    <em:name>MailHops</em:name>
+		    <em:description>Wskazuje trasę, którą e-mail dotarł do adresata. Korzystając z GeoIP, pokazuje także przybliżony dystans do nadawcy oraz jego położenie (miasto, region i państwo).</em:description>
+		  </Description>
+		</em:localized>
+
 		<em:localized>
 		  <Description>
 		    <em:locale>pt-BR</em:locale>