diff --git a/server/src/application/dto/create-env.dto.ts b/server/src/application/dto/create-env.dto.ts
index 16d5bc24a3..117b6b768a 100644
--- a/server/src/application/dto/create-env.dto.ts
+++ b/server/src/application/dto/create-env.dto.ts
@@ -1,11 +1,12 @@
 import { ApiProperty } from '@nestjs/swagger'
-import { IsNotEmpty, IsString, Length } from 'class-validator'
+import { IsNotEmpty, IsString, Length, Matches } from 'class-validator'
 
 export class CreateEnvironmentDto {
   @ApiProperty()
   @IsNotEmpty()
   @IsString()
   @Length(1, 64)
+  @Matches(/^[a-zA-Z_][a-zA-Z0-9_]*$/)
   name: string
 
   @ApiProperty()