diff --git a/judger/src/client/environment/.env.development b/judger/src/client/environment/.env.development
index c85ad28..bdbf771 100644
--- a/judger/src/client/environment/.env.development
+++ b/judger/src/client/environment/.env.development
@@ -1,2 +1,3 @@
 BASE_URL="http://localhost:8080/api/v1/judge"
+INTERVAL=10
 RUST_LOG=DEBUG
\ No newline at end of file
diff --git a/judger/src/client/environment/mod.rs b/judger/src/client/environment/mod.rs
index 152288f..efc681f 100644
--- a/judger/src/client/environment/mod.rs
+++ b/judger/src/client/environment/mod.rs
@@ -9,6 +9,9 @@ pub struct JudgeClientOpt {
     /// Port to listen to
     #[structopt(env = "BASE_URL", default_value = "http://localhost:8080/api/v1/judge")]
     pub base_url: String,
+
+    #[structopt(env = "INTERVAL", default_value = "10")]
+    pub interval: i32,
 }
 
 pub fn load_option() -> JudgeClientOpt {