diff --git a/backend/src/main/java/org/cryptomator/hub/license/RandomMinuteSleeper.java b/backend/src/main/java/org/cryptomator/hub/license/RandomMinuteSleeper.java
index b2d14fa9..f5b005e7 100644
--- a/backend/src/main/java/org/cryptomator/hub/license/RandomMinuteSleeper.java
+++ b/backend/src/main/java/org/cryptomator/hub/license/RandomMinuteSleeper.java
@@ -8,10 +8,14 @@
 public class RandomMinuteSleeper {
 
 	private static final long MINUTE_IN_MILLIS = 60 * 1000L;
-	private static final Random RNG = new Random();
+	private final Random rng;
+
+	public RandomMinuteSleeper() {
+		this.rng = new Random();
+	}
 
 	void sleep() throws InterruptedException {
-		Thread.sleep(RNG.nextInt(0, 60) * MINUTE_IN_MILLIS);
+		Thread.sleep(rng.nextInt(0, 60) * MINUTE_IN_MILLIS);
 	}
 
 }