diff --git a/backend/src/main/java/net/pengcook/recipe/dto/RecipeRequest.java b/backend/src/main/java/net/pengcook/recipe/dto/RecipeRequest.java
index b219d1b2..1cc49e9d 100644
--- a/backend/src/main/java/net/pengcook/recipe/dto/RecipeRequest.java
+++ b/backend/src/main/java/net/pengcook/recipe/dto/RecipeRequest.java
@@ -4,11 +4,12 @@
 import jakarta.validation.constraints.Min;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.Size;
 import java.util.List;
 import net.pengcook.ingredient.dto.IngredientCreateRequest;
 
 public record RecipeRequest(
-        @NotBlank String title,
+        @NotBlank @Size(max = 255) String title,
         @NotBlank String cookingTime,
         @NotBlank String thumbnail,
         @Min(0) @Max(10) int difficulty,
diff --git a/backend/src/main/resources/.env b/backend/src/main/resources/.env
new file mode 100644
index 00000000..d27d8390
--- /dev/null
+++ b/backend/src/main/resources/.env
@@ -0,0 +1 @@
+COMPOSE_PROJECT_NAME=pengcook