diff --git a/app/src/main/res/values-cy/strings.xml b/app/src/main/res/values-cy/strings.xml
index 60c47e82..0d1ea419 100644
--- a/app/src/main/res/values-cy/strings.xml
+++ b/app/src/main/res/values-cy/strings.xml
@@ -682,4 +682,33 @@
     <string name="dialog_follow_hashtag_title">Dilyn hashnod</string>
     <string name="dialog_follow_hashtag_hint">#hashnod</string>
     <string name="action_refresh">Adnewyddu</string>
+    <string name="notification_unknown_name">Anhysbys</string>
+    <string name="status_filtered_show_anyway">Dangos beth bynnag</string>
+    <string name="status_filter_placeholder_label_format">Hidlwyd: %s</string>
+    <string name="pref_title_account_filter_keywords">Proffiliau</string>
+    <string name="socket_timeout_exception">Cymrodd hi\'n rhy hir i gysylltu â\'ch gweinydd</string>
+    <string name="ui_error_unknown">rheswm anhysbys</string>
+    <string name="ui_error_bookmark">Methodd gosod y nod tudalen: %s</string>
+    <string name="ui_error_clear_notifications">Methodd clirio\'r hysbysiad: %s</string>
+    <string name="ui_error_favourite">Methodd ffefrynnu cofnod: %s</string>
+    <string name="ui_error_reblog">Methodd hybu cofnod: %s</string>
+    <string name="ui_error_vote">Methodd y pleidleisio: %s</string>
+    <string name="ui_error_accept_follow_request">Methodd derbyn cais i ddilyn: %s</string>
+    <string name="ui_error_reject_follow_request">Methodd gwrthod cais i ddilyn: %s</string>
+    <string name="ui_success_accepted_follow_request">Cais i ddilyn wedi\'i dderbyn</string>
+    <string name="ui_success_rejected_follow_request">Rhwystrwyd cais i ddilyn</string>
+    <string name="hint_filter_title">Fy hidl</string>
+    <string name="label_filter_title">Teitl</string>
+    <string name="filter_action_warn">Rhybudd</string>
+    <string name="filter_action_hide">Cuddio</string>
+    <string name="filter_description_warn">Cuddio gyda rhybudd</string>
+    <string name="filter_description_hide">Cuddio\'n llwyr</string>
+    <string name="label_filter_action">Gweithredoedd hidlo</string>
+    <string name="label_filter_context">Hidlo cyd-destynau</string>
+    <string name="label_filter_keywords">Allweddeiriau neu ymadroddion i\'w hidlo</string>
+    <string name="action_add">Ychwanegu</string>
+    <string name="filter_keyword_display_format">%s (gair cyfan)</string>
+    <string name="filter_keyword_addition_title">Ychwanegu allweddair</string>
+    <string name="filter_edit_keyword_title">Golygu allweddair</string>
+    <string name="filter_description_format">%s: %s</string>
 </resources>
\ No newline at end of file