diff --git a/cabal.project b/cabal.project
index b26c04055..a2ffcb6c0 100644
--- a/cabal.project
+++ b/cabal.project
@@ -12,7 +12,7 @@ packages: .
    -- coverage: False
    -- library-coverage: False
 
-index-state: 2023-12-12T00:00:00Z
+index-state: 2024-06-01T00:00:00Z
 
 package cryptostore
     flags: +use_crypton
diff --git a/package.yaml b/package.yaml
index f3c1e71c5..c50e805f4 100644
--- a/package.yaml
+++ b/package.yaml
@@ -70,7 +70,7 @@ dependencies:
   - temporary == 1.3.*
   - time == 1.12.*
   - time-manager == 0.0.*
-  - tls >= 1.9.0 && < 1.10
+  - tls >= 2.0.6 && < 2.1
   - transformers == 0.6.*
   - unliftio == 0.2.*
   - unliftio-core == 0.2.*
diff --git a/simplexmq.cabal b/simplexmq.cabal
index 9d85fa9af..9b1ad56bc 100644
--- a/simplexmq.cabal
+++ b/simplexmq.cabal
@@ -265,7 +265,7 @@ library
     , temporary ==1.3.*
     , time ==1.12.*
     , time-manager ==0.0.*
-    , tls >=1.9.0 && <1.10
+    , tls >=2.0.6 && <2.1
     , transformers ==0.6.*
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
@@ -341,7 +341,7 @@ executable ntf-server
     , temporary ==1.3.*
     , time ==1.12.*
     , time-manager ==0.0.*
-    , tls >=1.9.0 && <1.10
+    , tls >=2.0.6 && <2.1
     , transformers ==0.6.*
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
@@ -421,7 +421,7 @@ executable smp-server
     , temporary ==1.3.*
     , time ==1.12.*
     , time-manager ==0.0.*
-    , tls >=1.9.0 && <1.10
+    , tls >=2.0.6 && <2.1
     , transformers ==0.6.*
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
@@ -501,7 +501,7 @@ executable xftp
     , temporary ==1.3.*
     , time ==1.12.*
     , time-manager ==0.0.*
-    , tls >=1.9.0 && <1.10
+    , tls >=2.0.6 && <2.1
     , transformers ==0.6.*
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
@@ -577,7 +577,7 @@ executable xftp-server
     , temporary ==1.3.*
     , time ==1.12.*
     , time-manager ==0.0.*
-    , tls >=1.9.0 && <1.10
+    , tls >=2.0.6 && <2.1
     , transformers ==0.6.*
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*
@@ -703,7 +703,7 @@ test-suite simplexmq-test
     , time ==1.12.*
     , time-manager ==0.0.*
     , timeit ==2.0.*
-    , tls >=1.9.0 && <1.10
+    , tls >=2.0.6 && <2.1
     , transformers ==0.6.*
     , unliftio ==0.2.*
     , unliftio-core ==0.2.*