diff --git a/servant-auth/servant-auth-client/servant-auth-client.cabal b/servant-auth/servant-auth-client/servant-auth-client.cabal
index 3d144bb0e..ab66e2c75 100644
--- a/servant-auth/servant-auth-client/servant-auth-client.cabal
+++ b/servant-auth/servant-auth-client/servant-auth-client.cabal
@@ -73,7 +73,7 @@ test-suite spec
     , time                 >= 1.5.0.1  && < 1.13
     , transformers         >= 0.4.2.0  && < 0.7
     , wai                  >= 3.2.1.2  && < 3.3
-    , warp                 >= 3.2.25   && < 3.4
+    , warp                 >= 3.2.25   && < 3.5
     , jose                 >= 0.10     && < 0.12
   other-modules:
       Servant.Auth.ClientSpec
diff --git a/servant-auth/servant-auth-server/servant-auth-server.cabal b/servant-auth/servant-auth-server/servant-auth-server.cabal
index ccd6adf68..843c28085 100644
--- a/servant-auth/servant-auth-server/servant-auth-server.cabal
+++ b/servant-auth/servant-auth-server/servant-auth-server.cabal
@@ -127,7 +127,7 @@ test-suite spec
     , QuickCheck  >= 2.11.3    && < 2.15
     , http-client >= 0.5.13.1  && < 0.8
     , lens-aeson  >= 1.0.2     && < 1.3
-    , warp        >= 3.2.25    && < 3.4
+    , warp        >= 3.2.25    && < 3.5
     , wreq        >= 0.5.2.1   && < 0.6
     , text        >= 1.2.3.0   && < 2.2
   other-modules:
diff --git a/servant-conduit/servant-conduit.cabal b/servant-conduit/servant-conduit.cabal
index 07c8b18d7..4fc091279 100644
--- a/servant-conduit/servant-conduit.cabal
+++ b/servant-conduit/servant-conduit.cabal
@@ -57,6 +57,6 @@ test-suite example
     , servant-server >=0.20     && <0.21
     , servant-client >=0.20     && <0.21
     , wai            >=3.2.1.2  && <3.3
-    , warp           >=3.2.25   && <3.4
+    , warp           >=3.2.25   && <3.5
     , http-client
   default-language: Haskell2010
diff --git a/servant-machines/servant-machines.cabal b/servant-machines/servant-machines.cabal
index 785859880..2bf9b4471 100644
--- a/servant-machines/servant-machines.cabal
+++ b/servant-machines/servant-machines.cabal
@@ -54,6 +54,6 @@ test-suite example
     , servant-server >=0.20     && <0.21
     , servant-client >=0.20     && <0.21
     , wai            >=3.2.1.2  && <3.3
-    , warp           >=3.2.25   && <3.4
+    , warp           >=3.2.25   && <3.5
     , http-client
   default-language: Haskell2010
diff --git a/servant-pipes/servant-pipes.cabal b/servant-pipes/servant-pipes.cabal
index 2c6e977d5..56234dc5c 100644
--- a/servant-pipes/servant-pipes.cabal
+++ b/servant-pipes/servant-pipes.cabal
@@ -58,6 +58,6 @@ test-suite example
     , servant-server    >=0.15     && <0.21
     , servant-client    >=0.15     && <0.21
     , wai               >=3.2.1.2  && <3.3
-    , warp              >=3.2.25   && <3.4
+    , warp              >=3.2.25   && <3.5
     , http-client
   default-language: Haskell2010
diff --git a/servant-server/servant-server.cabal b/servant-server/servant-server.cabal
index 10f2141a0..438712788 100644
--- a/servant-server/servant-server.cabal
+++ b/servant-server/servant-server.cabal
@@ -115,7 +115,7 @@ executable greet
 
   build-depends:
       aeson               >= 1.4.1.0  && < 3
-    , warp                >= 3.2.25   && < 3.4
+    , warp                >= 3.2.25   && < 3.5
 
 test-suite spec
   type: exitcode-stdio-1.0