diff --git a/cabal.project b/cabal.project
index bf2ebeaa4..5c6895cdd 100644
--- a/cabal.project
+++ b/cabal.project
@@ -15,7 +15,7 @@ source-repository-package
 source-repository-package
     type: git
     location: https://github.com/kazu-yamamoto/http2.git
-    tag: b3b62ba36900babfde1a073c705cbccc2685f385
+    tag: 78e18f52295a7f89e828539a03fbcb24931461a3
 
 source-repository-package
     type: git
diff --git a/package.yaml b/package.yaml
index fd23c72c2..86e2d70be 100644
--- a/package.yaml
+++ b/package.yaml
@@ -42,7 +42,7 @@ dependencies:
   - directory == 1.3.*
   - filepath == 1.4.*
   - http-types == 0.12.*
-  - http2 == 4.0.*
+  - http2 == 4.1.*
   - generic-random >= 1.3 && < 1.5
   - ini == 0.4.1
   - iso8601-time == 0.1.*
diff --git a/simplexmq.cabal b/simplexmq.cabal
index d82e34a6f..422ea01e8 100644
--- a/simplexmq.cabal
+++ b/simplexmq.cabal
@@ -151,7 +151,7 @@ library
     , filepath ==1.4.*
     , generic-random >=1.3 && <1.5
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , memory ==0.15.*
@@ -214,7 +214,7 @@ executable ntf-server
     , filepath ==1.4.*
     , generic-random >=1.3 && <1.5
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , memory ==0.15.*
@@ -278,7 +278,7 @@ executable smp-agent
     , filepath ==1.4.*
     , generic-random >=1.3 && <1.5
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , memory ==0.15.*
@@ -342,7 +342,7 @@ executable smp-server
     , filepath ==1.4.*
     , generic-random >=1.3 && <1.5
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , memory ==0.15.*
@@ -406,7 +406,7 @@ executable xftp
     , filepath ==1.4.*
     , generic-random >=1.3 && <1.5
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , memory ==0.15.*
@@ -470,7 +470,7 @@ executable xftp-server
     , filepath ==1.4.*
     , generic-random >=1.3 && <1.5
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , memory ==0.15.*
@@ -561,7 +561,7 @@ test-suite simplexmq-test
     , hspec ==2.7.*
     , hspec-core ==2.7.*
     , http-types ==0.12.*
-    , http2 ==4.0.*
+    , http2 ==4.1.*
     , ini ==0.4.1
     , iso8601-time ==0.1.*
     , main-tester ==0.2.*
diff --git a/stack.yaml b/stack.yaml
index 0cc68455c..1835dec0e 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -48,6 +48,8 @@ extra-deps:
   - time-compat-1.9.6.1@sha256:42d8f2e08e965e1718917d54ad69e1d06bd4b87d66c41dc7410f59313dba4ed1,5033
   - github: simplex-chat/aeson
     commit: 3eb66f9a68f103b5f1489382aad89f5712a64db7
+  - github: kazu-yamamoto/http2
+    commit: 78e18f52295a7f89e828539a03fbcb24931461a3
   # - ../direct-sqlcipher
   - github: simplex-chat/direct-sqlcipher
     commit: 34309410eb2069b029b8fc1872deb1e0db123294