diff --git a/package.yaml b/package.yaml
index c1e726683..6e8b69715 100644
--- a/package.yaml
+++ b/package.yaml
@@ -67,6 +67,7 @@ dependencies:
   - time-manager == 0.0.*
   - tls >= 1.6.0 && < 1.7
   - transformers == 0.6.*
+  - unix == 2.8.1.1
   - unliftio == 0.2.*
   - unliftio-core == 0.2.*
   - websockets == 0.12.*
diff --git a/simplexmq.cabal b/simplexmq.cabal
index cb304b4b0..d1f2d4591 100644
--- a/simplexmq.cabal
+++ b/simplexmq.cabal
@@ -189,6 +189,7 @@ library
     , time-manager ==0.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*
@@ -254,6 +255,7 @@ executable ntf-server
     , time-manager ==0.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*
@@ -319,6 +321,7 @@ executable smp-agent
     , time-manager ==0.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*
@@ -384,6 +387,7 @@ executable smp-server
     , time-manager ==0.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*
@@ -449,6 +453,7 @@ executable xftp
     , time-manager ==0.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*
@@ -514,6 +519,7 @@ executable xftp-server
     , time-manager ==0.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*
@@ -614,6 +620,7 @@ test-suite simplexmq-test
     , timeit ==2.0.*
     , tls >=1.6.0 && <1.7
     , transformers ==0.6.*
+    , unix ==2.8.1.1
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
     , websockets ==0.12.*