diff --git a/cabal.project b/cabal.project
index 301ca7d56..08e1865b3 100644
--- a/cabal.project
+++ b/cabal.project
@@ -19,7 +19,7 @@ source-repository-package
 source-repository-package
     type: git
     location: https://github.com/kazu-yamamoto/http2.git
-    tag: b5a1b7200cf5bc7044af34ba325284271f6dff25
+    tag: 804fa283f067bd3fd89b8c5f8d25b3047813a517
 
 source-repository-package
     type: git
diff --git a/package.yaml b/package.yaml
index dc18c5b4e..6fdda401b 100644
--- a/package.yaml
+++ b/package.yaml
@@ -43,7 +43,7 @@ dependencies:
   - filepath == 1.4.*
   - hourglass == 0.2.*
   - http-types == 0.12.*
-  - http2 == 4.1.*
+  - http2 >= 4.1.4 && < 4.2
   - generic-random == 1.5.*
   - ini == 0.4.1
   - iproute == 1.7.*
diff --git a/simplexmq.cabal b/simplexmq.cabal
index 62a59b0fe..84706cce5 100644
--- a/simplexmq.cabal
+++ b/simplexmq.cabal
@@ -168,7 +168,7 @@ library
     , generic-random ==1.5.*
     , hourglass ==0.2.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
@@ -233,7 +233,7 @@ executable ntf-server
     , generic-random ==1.5.*
     , hourglass ==0.2.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
@@ -299,7 +299,7 @@ executable smp-agent
     , generic-random ==1.5.*
     , hourglass ==0.2.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
@@ -365,7 +365,7 @@ executable smp-server
     , generic-random ==1.5.*
     , hourglass ==0.2.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
@@ -431,7 +431,7 @@ executable xftp
     , generic-random ==1.5.*
     , hourglass ==0.2.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
@@ -497,7 +497,7 @@ executable xftp-server
     , generic-random ==1.5.*
     , hourglass ==0.2.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
@@ -595,7 +595,7 @@ test-suite simplexmq-test
     , hspec ==2.11.*
     , hspec-core ==2.11.*
     , http-types ==0.12.*
-    , http2 ==4.1.*
+    , http2 >=4.1.4 && <4.2
     , ini ==0.4.1
     , iproute ==1.7.*
     , iso8601-time ==0.1.*
diff --git a/stack.yaml b/stack.yaml
index 58f50b42f..4ba98eedb 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -49,7 +49,7 @@ extra-deps:
   - github: simplex-chat/aeson
     commit: aab7b5a14d6c5ea64c64dcaee418de1bb00dcc2b
   - github: kazu-yamamoto/http2
-    commit: b5a1b7200cf5bc7044af34ba325284271f6dff25
+    commit: 804fa283f067bd3fd89b8c5f8d25b3047813a517
   # - ../direct-sqlcipher
   - github: simplex-chat/direct-sqlcipher
     commit: f814ee68b16a9447fbb467ccc8f29bdd3546bfd9