diff --git a/crates/dtrack-core/src/lib.rs b/crates/dtrack-core/src/lib.rs
index 8540fee..90ab001 100644
--- a/crates/dtrack-core/src/lib.rs
+++ b/crates/dtrack-core/src/lib.rs
@@ -49,18 +49,19 @@ impl DtrackClient {
         self.get_query(path, &[]).await
     }
 
-    /// Wie `get`, aber mit Query-Parametern, die reqwest sauber URL-encodet
-    /// (z.B. fuer Namen mit Leerzeichen in `lookup_project`).
+    /// Wie `get`, aber mit Query-Parametern. reqwest 0.13 hat kein
+    /// `RequestBuilder::query` mehr -- daher die URL ueber `Url::parse_with_params`
+    /// bauen; das encodet z.B. Leerzeichen in `lookup_project`-Namen sauber.
     async fn get_query(&self, path: &str, params: &[(&str, &str)]) -> Result<String> {
-        let url = format!("{}{}", self.base_url, path);
+        let url = reqwest::Url::parse_with_params(&format!("{}{}", self.base_url, path), params)
+            .with_context(|| format!("Ungueltige URL fuer {path}"))?;
         let resp = self
             .http
-            .get(&url)
+            .get(url)
             .header("X-Api-Key", &self.api_key)
-            .query(params)
             .send()
             .await
-            .with_context(|| format!("Request an {url} fehlgeschlagen"))?;
+            .with_context(|| format!("Request an {path} fehlgeschlagen"))?;
 
         self.handle(path, resp).await
     }