diff --git a/tests/waku_discv5/test_waku_discv5.nim b/tests/waku_discv5/test_waku_discv5.nim
index 936c01826..413582fe3 100644
--- a/tests/waku_discv5/test_waku_discv5.nim
+++ b/tests/waku_discv5/test_waku_discv5.nim
@@ -423,7 +423,7 @@ suite "Waku Discovery v5":
       let myRng = libp2p_keys.newRng()
       var confBuilder = defaultTestWakuConfBuilder()
 
-      confBuilder.withNodeKey(libp2p_keys.PrivateKey.random(Secp256k1, myRng[])[])
+      confBuilder.withNodeKey(libp2p_keys.PrivateKey.random(Secp256k1, myRng)[])
       confBuilder.discv5Conf.withEnabled(true)
       confBuilder.discv5Conf.withUdpPort(9000.Port)
       let conf = confBuilder.build().valueOr:
@@ -434,7 +434,7 @@ suite "Waku Discovery v5":
       (waitFor startWaku(addr waku0)).isOkOr:
         raiseAssert error
 
-      confBuilder.withNodeKey(crypto.PrivateKey.random(Secp256k1, myRng[])[])
+      confBuilder.withNodeKey(crypto.PrivateKey.random(Secp256k1, myRng)[])
       confBuilder.discv5Conf.withBootstrapNodes(@[waku0.node.enr.toURI()])
       confBuilder.discv5Conf.withEnabled(true)
       confBuilder.discv5Conf.withUdpPort(9001.Port)
@@ -454,7 +454,7 @@ suite "Waku Discovery v5":
       confBuilder.discv5Conf.withBootstrapNodes(@[waku1.node.enr.toURI()])
       confBuilder.withP2pTcpPort(60003.Port)
       confBuilder.discv5Conf.withUdpPort(9003.Port)
-      confBuilder.withNodeKey(crypto.PrivateKey.random(Secp256k1, myRng[])[])
+      confBuilder.withNodeKey(crypto.PrivateKey.random(Secp256k1, myRng)[])
 
       let conf2 = confBuilder.build().valueOr:
         raiseAssert error
diff --git a/tests/wakunode_rest/test_rest_cors.nim b/tests/wakunode_rest/test_rest_cors.nim
index 0393b0d72..e55b3c4e5 100644
--- a/tests/wakunode_rest/test_rest_cors.nim
+++ b/tests/wakunode_rest/test_rest_cors.nim
@@ -22,7 +22,7 @@ type TestResponseTuple = tuple[status: int, data: string, headers: HttpTable]
 
 proc testWakuNode(): WakuNode =
   let
-    privkey = crypto.PrivateKey.random(Secp256k1, rng[]).tryGet()
+    privkey = crypto.PrivateKey.random(Secp256k1, newBearSslRng(rng())).tryGet()
     bindIp = parseIpAddress("0.0.0.0")
     extIp = parseIpAddress("127.0.0.1")
     port = Port(0)
diff --git a/tests/wakunode_rest/test_rest_debug.nim b/tests/wakunode_rest/test_rest_debug.nim
index 1171f5878..74426c797 100644
--- a/tests/wakunode_rest/test_rest_debug.nim
+++ b/tests/wakunode_rest/test_rest_debug.nim
@@ -25,7 +25,7 @@ import
 
 proc testWakuNode(): WakuNode =
   let
-    privkey = crypto.PrivateKey.random(Secp256k1, rng[]).tryGet()
+    privkey = crypto.PrivateKey.random(Secp256k1, newBearSslRng(rng())).tryGet()
     bindIp = parseIpAddress("0.0.0.0")
     extIp = parseIpAddress("127.0.0.1")
     port = Port(0)
diff --git a/tests/wakunode_rest/test_rest_health.nim b/tests/wakunode_rest/test_rest_health.nim
index 0bdb93123..834e27bbf 100644
--- a/tests/wakunode_rest/test_rest_health.nim
+++ b/tests/wakunode_rest/test_rest_health.nim
@@ -29,7 +29,7 @@ import
 
 proc testWakuNode(): WakuNode =
   let
-    privkey = crypto.PrivateKey.random(Secp256k1, rng[]).tryGet()
+    privkey = crypto.PrivateKey.random(Secp256k1, newBearSslRng(rng())).tryGet()
     bindIp = parseIpAddress("0.0.0.0")
     extIp = parseIpAddress("127.0.0.1")
     port = Port(0)