diff --git a/localization/localization_cy_GB.ts b/localization/localization_cy_GB.ts
index 4fe0f0dd..ce61fbf2 100644
--- a/localization/localization_cy_GB.ts
+++ b/localization/localization_cy_GB.ts
@@ -57,17 +57,17 @@
     <message>
         <location filename="../src/configdialog.ui" line="220"/>
         <source>Use a monospace font</source>
-        <translation type="unfinished"></translation>
+        <translation>Defnyddiwch ffont monospace</translation>
     </message>
     <message>
         <location filename="../src/configdialog.ui" line="227"/>
         <source>Display the files content as-is</source>
-        <translation type="unfinished"></translation>
+        <translation>Arddangos cynnwys y ffeiliau fel y mae</translation>
     </message>
     <message>
         <location filename="../src/configdialog.ui" line="234"/>
         <source>No line wrapping</source>
-        <translation type="unfinished"></translation>
+        <translation>Dim lapio llinell</translation>
     </message>
     <message>
         <location filename="../src/configdialog.ui" line="266"/>
@@ -296,7 +296,7 @@
     <message>
         <location filename="../src/configdialog.ui" line="918"/>
         <source>Signing Key</source>
-        <translation type="unfinished"></translation>
+        <translation>Allwedd Lofnodi</translation>
     </message>
     <message>
         <location filename="../src/configdialog.ui" line="928"/>
@@ -440,14 +440,14 @@ e-mail</translation>
         <location filename="../src/imitatepass.cpp" line="242"/>
         <location filename="../src/imitatepass.cpp" line="353"/>
         <source>Check .gpgid file signature!</source>
-        <translation type="unfinished"></translation>
+        <translation>Gwiriwch llofnod y ffeil .gpgid!</translation>
     </message>
     <message>
         <location filename="../src/imitatepass.cpp" line="96"/>
         <location filename="../src/imitatepass.cpp" line="243"/>
         <location filename="../src/imitatepass.cpp" line="354"/>
         <source>Signature for %1 is invalid.</source>
-        <translation type="unfinished"></translation>
+        <translation>Llofnod %1 yn annilys.</translation>
     </message>
     <message>
         <location filename="../src/imitatepass.cpp" line="103"/>
@@ -464,13 +464,14 @@ e-mail</translation>
     <message>
         <location filename="../src/imitatepass.cpp" line="194"/>
         <source>No signing key!</source>
-        <translation type="unfinished"></translation>
+        <translation>Dim allwedd lofnodi!</translation>
     </message>
     <message>
         <location filename="../src/imitatepass.cpp" line="195"/>
         <source>None of the secret signing keys is available.
 You will not be able to change the user list!</source>
-        <translation type="unfinished"></translation>
+        <translation>Nid oes yr un o&apos;r allweddi lofnodi cyfrinachol ar gael.
+Ni fyddwch yn gallu newid y rhestr defnyddwyr!</translation>
     </message>
     <message>
         <location filename="../src/imitatepass.cpp" line="214"/>
@@ -541,7 +542,7 @@ Ni fyddwch yn gallu dadgryptio unrhyw gyfrineiriau sydd newydd eu hychwanegu!</t
     <message>
         <location filename="../src/keygendialog.ui" line="206"/>
         <source>Repeat pass</source>
-        <translation type="unfinished"></translation>
+        <translation>Ailadrodd pass</translation>
     </message>
     <message>
         <location filename="../src/keygendialog.ui" line="223"/>