diff --git a/src/test/java/com/google/fleetengine/auth/AuthTokenMinterTest.java b/src/test/java/com/google/fleetengine/auth/AuthTokenMinterTest.java
index 3660336..419daf6 100644
--- a/src/test/java/com/google/fleetengine/auth/AuthTokenMinterTest.java
+++ b/src/test/java/com/google/fleetengine/auth/AuthTokenMinterTest.java
@@ -259,7 +259,7 @@ public void getFleetReaderToken_whenFleetReaderSignerSet_signsWithSetFleetReader
         defaultFleetEngineAuthBuilder.setFleetReaderSigner(fleetReaderSigner).build();
     when(tokenFactory.createFleetReaderToken()).thenReturn(fleetEngineToken);
 
-    var unused = baseFleetEngineAuth.getFleetReaderToken();
+    FleetEngineToken unused = baseFleetEngineAuth.getFleetReaderToken();
 
     verify(authStateManager, times(1)).signToken(eq(fleetReaderSigner), eq(fleetEngineToken));
   }