diff --git a/src/external.rs b/src/external.rs
index d680a6b..fc11831 100644
--- a/src/external.rs
+++ b/src/external.rs
@@ -8,7 +8,12 @@ pub async fn post_api<P: DeserializeOwned, A: AsRef<str>, B: AsRef<str>>(
     endpoint: B,
     mapjson: HashMap<String, String>,
 ) -> Result<P, Box<dyn Error>> {
-    let client = reqwest::Client::new();
+    static APP_USER_AGENT: &str = concat!(env!("CARGO_PKG_NAME"), "/", env!("CARGO_PKG_VERSION"),);
+
+    let client = reqwest::Client::builder()
+        .user_agent(APP_USER_AGENT)
+        .build()?;
+
     let res = client
         .post(format!("{}{}", server.as_ref(), endpoint.as_ref()))
         .json(&mapjson)