diff --git a/tests/impure-derivations.sh b/tests/impure-derivations.sh
index 85e3e09cc..1b33a785c 100644
--- a/tests/impure-derivations.sh
+++ b/tests/impure-derivations.sh
@@ -3,6 +3,7 @@ source common.sh
 requireDaemonNewerThan "2.8pre20220311"
 
 enableFeatures "ca-derivations ca-references impure-derivations"
+restartDaemon
 
 clearStore