diff --git a/src/components/milestone/CompletedMilestoneDisplay.vue b/src/components/milestone/CompletedMilestoneDisplay.vue
index 6b68e386d9b8a8f3b3cd55849fd503d6a1e9817b..5875c9da39b75fab00fe7e1775c2de2b64ee73b0 100644
--- a/src/components/milestone/CompletedMilestoneDisplay.vue
+++ b/src/components/milestone/CompletedMilestoneDisplay.vue
@@ -6,8 +6,8 @@ const props = defineProps({
   description: String,
   goalSum: Number,
   currentSum: Number,
-  deadline: String,
-  startDate: String,
+  deadline: Date,
+  startDate: Date,
   image: String,
   expanded: Boolean
 });