diff --git a/cabal.project b/cabal.project
index 0e606fb00b..96128e0f66 100644
--- a/cabal.project
+++ b/cabal.project
@@ -21,7 +21,7 @@ constraints: zip +disable-bzip2 +disable-zstd
 source-repository-package
     type: git
     location: https://github.com/simplex-chat/simplexmq.git
-    tag: 71bb0d34a40bddc877e777f492e6dfaaccdff87b
+    tag: 71179c4d4e96893fbddc25770d279a0f52fc41f7
 
 source-repository-package
     type: git
diff --git a/scripts/nix/sha256map.nix b/scripts/nix/sha256map.nix
index 65f7e2e230..7e6e208eb2 100644
--- a/scripts/nix/sha256map.nix
+++ b/scripts/nix/sha256map.nix
@@ -1,5 +1,5 @@
 {
-  "https://github.com/simplex-chat/simplexmq.git"."71bb0d34a40bddc877e777f492e6dfaaccdff87b" = "04azgckrcj806c867vddzv72vfzplxrslm9p7qa51fn1v6r5pasi";
+  "https://github.com/simplex-chat/simplexmq.git"."71179c4d4e96893fbddc25770d279a0f52fc41f7" = "0m4363xb93xfxmxknymk5j56xya84121qyqcxrpzwgbahnm1x9yn";
   "https://github.com/simplex-chat/hs-socks.git"."a30cc7a79a08d8108316094f8f2f82a0c5e1ac51" = "0yasvnr7g91k76mjkamvzab2kvlb1g5pspjyjn2fr6v83swjhj38";
   "https://github.com/simplex-chat/direct-sqlcipher.git"."2330df3dc8c4b660674d3c02d76bb86f66c2abee" = "11pfj1vqsjdl26nplkr2l6z1xj7cn153qijj5gknmlzq3krn7x1i";
   "https://github.com/simplex-chat/sqlcipher-simple.git"."a46bd361a19376c5211f1058908fc0ae6bf42446" = "1z0r78d8f0812kxbgsm735qf6xx8lvaz27k1a0b4a2m0sshpd5gl";
diff --git a/tests/ChatClient.hs b/tests/ChatClient.hs
index 086abd8e48..bd638bce1b 100644
--- a/tests/ChatClient.hs
+++ b/tests/ChatClient.hs
@@ -669,6 +669,7 @@ smpServerCfg p =
       pendingENDInterval = 500000,
       authErrorDelay = 10,
       ntfDeliveryInterval = 200000,
+      ntfDeliveryChunk = 1000,
       smpServerVRange = supportedServerSMPRelayVRange,
       transportConfig = mkTransportServerConfig True (Just alpnSupportedSMPHandshakes) True,
       smpHandshakeTimeout = 1000000,