diff --git a/package.yaml b/package.yaml
index 85d70e83a..d555e5ebd 100644
--- a/package.yaml
+++ b/package.yaml
@@ -50,7 +50,7 @@ dependencies:
   - iproute == 1.7.*
   - iso8601-time == 0.1.*
   - memory >= 0.15 && < 0.19
-  - mtl >= 2.2 && < 3
+  - mtl >= 2.3.1 && < 3
   - network >= 3.1.2.7 && < 3.2
   - network-info >= 0.2 && < 0.3
   - network-transport >= 0.5.4 && < 0.6
diff --git a/simplexmq.cabal b/simplexmq.cabal
index 4dc97c97b..23f3bea48 100644
--- a/simplexmq.cabal
+++ b/simplexmq.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.36.0.
+-- This file has been generated from package.yaml by hpack version 0.35.0.
 --
 -- see: https://github.com/sol/hpack
 
@@ -192,7 +192,7 @@ library
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
@@ -257,7 +257,7 @@ executable ntf-server
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
@@ -323,7 +323,7 @@ executable smp-agent
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
@@ -389,7 +389,7 @@ executable smp-server
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
@@ -455,7 +455,7 @@ executable xftp
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
@@ -521,7 +521,7 @@ executable xftp-server
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
@@ -623,7 +623,7 @@ test-suite simplexmq-test
     , iso8601-time ==0.1.*
     , main-tester ==0.2.*
     , memory >=0.15 && <0.19
-    , mtl >=2.2 && <3
+    , mtl >=2.3.1 && <3
     , network >=3.1.2.7 && <3.2
     , network-info ==0.2.*
     , network-transport >=0.5.4 && <0.6
diff --git a/tests/XFTPServerTests.hs b/tests/XFTPServerTests.hs
index 5ad3e4364..3a6645cdd 100644
--- a/tests/XFTPServerTests.hs
+++ b/tests/XFTPServerTests.hs
@@ -142,7 +142,7 @@ runTestFileChunkDelete s r = do
   deleteXFTPChunk s spKey sId
   liftIO $
     readChunk sId
-      `shouldThrow` \(e :: SomeException) -> "withBinaryFile" `isInfixOf` show e
+      `shouldThrow` \(e :: SomeException) -> "does not exist" `isInfixOf` show e
   downloadXFTPChunk r rpKey rId (XFTPRcvChunkSpec "tests/tmp/received_chunk2" chSize digest)
     `catchError` (liftIO . (`shouldBe` PCEProtocolError AUTH))
   deleteXFTPChunk s spKey sId