diff --git a/app/src/main/res/values-cy/strings.xml b/app/src/main/res/values-cy/strings.xml
index 941fc818c..a2f06a4a4 100644
--- a/app/src/main/res/values-cy/strings.xml
+++ b/app/src/main/res/values-cy/strings.xml
@@ -223,10 +223,20 @@
         <item quantity="other">ymhen %dh</item>
     </plurals>
     <plurals name="abbreviated_in_minutes">
+        <item quantity="zero">ymhen %dm</item>
+        <item quantity="one">ymhen %df</item>
+        <item quantity="two">ymhen %df</item>
+        <item quantity="few">ymhen %dm</item>
+        <item quantity="many">ymhen %dm</item>
         <item quantity="other">ymhen %dm</item>
     </plurals>
     <plurals name="abbreviated_in_seconds">
-        <item quantity="other">ymhen %ds</item>
+        <item quantity="zero">ymhen %de</item>
+        <item quantity="one">ymhen %de</item>
+        <item quantity="two">ymhen %de</item>
+        <item quantity="few">ymhen %de</item>
+        <item quantity="many">ymhen %de</item>
+        <item quantity="other">ymhen %de</item>
     </plurals>
     <plurals name="abbreviated_years_ago">
         <item quantity="other">%db yn ôl</item>
@@ -769,4 +779,4 @@
     <string name="pref_title_show_self_boosts">Dangos hunan-hybiau</string>
     <string name="pref_title_show_self_boosts_description">Rhywun yn hybu ei neges ei hunan</string>
     <string name="pref_title_per_timeline_preferences">Dewisiadau i bob ffrwd</string>
-</resources>
+</resources>
\ No newline at end of file