diff --git a/BrewBar/BrewParser.swift b/BrewBar/BrewParser.swift
index e68fbad..7e6ce6b 100644
--- a/BrewBar/BrewParser.swift
+++ b/BrewBar/BrewParser.swift
@@ -7,8 +7,15 @@ struct OutdatedPackage: Codable, Equatable {
 
     /// Menu label, e.g. "wget 1.21 → 1.22"
     var label: String {
-        let installed = installedVersions.joined(separator: ", ")
-        return "\(name) \(installed) → \(currentVersion)"
+        let installed = installedVersions.map(Self.displayVersion).joined(separator: ", ")
+        return "\(name) \(installed) → \(Self.displayVersion(currentVersion))"
+    }
+
+    /// Some casks (e.g. claude: "1.20186.9,69f150a4c9…") version themselves
+    /// as "user-facing-version,build-id" — the part after the comma only
+    /// matters for brew's own download URL, never for display.
+    static func displayVersion(_ version: String) -> String {
+        String(version.split(separator: ",", maxSplits: 1)[0])
     }
 }
 
diff --git a/BrewBarTests/BrewBarTests.swift b/BrewBarTests/BrewBarTests.swift
index 8cd9f62..5cfde8d 100644
--- a/BrewBarTests/BrewBarTests.swift
+++ b/BrewBarTests/BrewBarTests.swift
@@ -64,6 +64,15 @@ final class BrewParserTests: XCTestCase {
         XCTAssertEqual(package.label, "wget 1.21.3 → 1.21.4")
     }
 
+    func testParseOutdatedJSON_packageLabel_stripsBuildIdAfterComma() {
+        let package = OutdatedPackage(
+            name: "claude",
+            installedVersions: ["1.20185.0,5e8f0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f"],
+            currentVersion: "1.20186.9,69f150a4c9316d5c8cd7b9f130ed583d15c0383e"
+        )
+        XCTAssertEqual(package.label, "claude 1.20185.0 → 1.20186.9")
+    }
+
     // MARK: - parseVersion
 
     func testParseVersion_picksFirstLine() {