diff --git a/test/units/TEST-75-RESOLVED.sh b/test/units/TEST-75-RESOLVED.sh
index cabd389f3c..53985d9686 100755
--- a/test/units/TEST-75-RESOLVED.sh
+++ b/test/units/TEST-75-RESOLVED.sh
@@ -182,8 +182,8 @@ EOF
         chown -R knot:knot /run/knot
     fi
     systemctl start knot
-    # Wait a bit for the keys to propagate
-    sleep 4
+    # Wait for signed.test's zone DS records to get pushed to the parent zone
+    timeout 30s bash -xec 'until knotc zone-read test. signed.test. ds | grep -E "signed\.test\. [0-9]+ DS"; do sleep 2; done'
 
     systemctl status resolved-dummy-server
     networkctl status