diff --git a/src/config/credentials.rs b/src/config/credentials.rs
index 53c15a3..31d79e3 100644
--- a/src/config/credentials.rs
+++ b/src/config/credentials.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 use {
+    crate::constants::USER_AGENT,
     anyhow::{anyhow, Result},
     reqwest::{StatusCode, Url},
     serde::{Deserialize, Serialize},
@@ -46,7 +47,9 @@ impl Credentials {
     }
 
     pub fn add(&mut self, server: Url) -> Result<()> {
-        let http_client = reqwest::blocking::Client::new();
+        let http_client = reqwest::blocking::Client::builder()
+            .user_agent(USER_AGENT)
+            .build()?;
 
         #[derive(Deserialize)]
         struct LoginFlow {
diff --git a/src/constants.rs b/src/constants.rs
new file mode 100644
index 0000000..8fb4a1c
--- /dev/null
+++ b/src/constants.rs
@@ -0,0 +1,4 @@
+// SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+pub const USER_AGENT: &str = concat!(env!("CARGO_PKG_NAME"), "/", env!("CARGO_PKG_VERSION"));
diff --git a/src/main.rs b/src/main.rs
index 93b842e..5aee557 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 mod config;
+mod constants;
 
 use {
     self::config::Config,