diff --git a/server/src/geolocations/dto/create-geolocation.dto.ts b/server/src/geolocations/dto/create-geolocation.dto.ts
index ed37331..13f0500 100644
--- a/server/src/geolocations/dto/create-geolocation.dto.ts
+++ b/server/src/geolocations/dto/create-geolocation.dto.ts
@@ -1,24 +1,40 @@
 import { ApiProperty } from "@nestjs/swagger"
+import { Type } from "class-transformer"
+import { IsDate, IsLatitude, IsLongitude, IsNumber } from "class-validator"
 
 export class CreateGeolocationDto {
-    @ApiProperty({description: "Longitude en degrés"})
+    @IsLongitude()
+    @Type(() => Number)
+    @ApiProperty({description: "Longitude en degrés", required: true})
     longitude: number
   
+    @IsLatitude()
+    @Type(() => Number)
     @ApiProperty({description: "Latitude en degrés"})
     latitude: number
   
+    @IsNumber()
+    @Type(() => Number)
     @ApiProperty({description: "Vitesse en mètres par seconde"})
     speed: number
   
+    @IsNumber()
+    @Type(() => Number)
     @ApiProperty({description: "Précision en mètres de la position obtenue"})
     accuracy: number
   
+    @IsNumber()
+    @Type(() => Number)
     @ApiProperty({description: "Altitude en mètres"})
     altitude: number
   
+    @IsNumber()
+    @Type(() => Number)
     @ApiProperty({description: "Précision de l'altitude en mètres"})
     altitudeAccuracy: number
   
+    @IsDate()
+    @Type(() => Date)
     @ApiProperty({description: "Date et heure de capture de la géolocalisation"})
     timestamp: Date
 }