diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a5a07a8722..0b11716605 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -55,22 +55,22 @@ jobs:
             ghc: "8.10.7"
             cache_path: ~/.cabal/store
           - os: ubuntu-20.04
-            ghc: "9.6.3"
+            ghc: "9.6.4"
             cache_path: ~/.cabal/store
             asset_name: simplex-chat-ubuntu-20_04-x86-64
             desktop_asset_name: simplex-desktop-ubuntu-20_04-x86_64.deb
           - os: ubuntu-22.04
-            ghc: "9.6.3"
+            ghc: "9.6.4"
             cache_path: ~/.cabal/store
             asset_name: simplex-chat-ubuntu-22_04-x86-64
             desktop_asset_name: simplex-desktop-ubuntu-22_04-x86_64.deb
           - os: macos-latest
-            ghc: "9.6.3"
+            ghc: "9.6.4"
             cache_path: ~/.cabal/store
             asset_name: simplex-chat-macos-x86-64
             desktop_asset_name: simplex-desktop-macos-x86_64.dmg
           - os: windows-latest
-            ghc: "9.6.3"
+            ghc: "9.6.4"
             cache_path: C:/cabal
             asset_name: simplex-chat-windows-x86-64
             desktop_asset_name: simplex-desktop-windows-x86_64.msi
diff --git a/Dockerfile b/Dockerfile
index 6c60195f97..29f3381726 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ FROM ubuntu:${TAG} AS build
 RUN apt-get update && apt-get install -y curl git build-essential libgmp3-dev zlib1g-dev llvm-12 llvm-12-dev libnuma-dev libssl-dev
 
 # Specify bootstrap Haskell versions
-ENV BOOTSTRAP_HASKELL_GHC_VERSION=9.6.3
+ENV BOOTSTRAP_HASKELL_GHC_VERSION=9.6.4
 ENV BOOTSTRAP_HASKELL_CABAL_VERSION=3.10.1.0
 
 # Install ghcup
diff --git a/docs/CLI.md b/docs/CLI.md
index d4f799c7af..cc74d29db9 100644
--- a/docs/CLI.md
+++ b/docs/CLI.md
@@ -102,7 +102,7 @@ DOCKER_BUILDKIT=1 docker build --output ~/.local/bin .
 
 #### In any OS
 
-1. Install [Haskell GHCup](https://www.haskell.org/ghcup/), GHC 9.6.3 and cabal 3.10.1.0:
+1. Install [Haskell GHCup](https://www.haskell.org/ghcup/), GHC 9.6.4 and cabal 3.10.1.0:
 
 ```shell
 curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index bc013cd7eb..d6c11daf7f 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -30,13 +30,13 @@ You will have to add `/opt/homebrew/opt/openssl@1.1/bin` to your PATH in order t
 
 **In simplex-chat repo**
 
-- `stable` - stable release of the apps, can be used for updates to the previous stable release (GHC 9.6.3).
+- `stable` - stable release of the apps, can be used for updates to the previous stable release (GHC 9.6.4).
 
 - `stable-android` - used to build stable Android core library with Nix (GHC 8.10.7) - only for Android armv7a.
 
 - `stable-ios` - used to build stable iOS core library with Nix (GHC 8.10.7) – this branch should be the same as `stable-android` except Nix configuration files. Deprecated.
 
-- `master` - branch for beta version releases (GHC 9.6.3).
+- `master` - branch for beta version releases (GHC 9.6.4).
 
 - `master-ghc8107` - branch for beta version releases (GHC 8.10.7). Deprecated.
 
@@ -50,7 +50,7 @@ You will have to add `/opt/homebrew/opt/openssl@1.1/bin` to your PATH in order t
 
 **In simplexmq repo**
 
-- `master` - uses GHC 9.6.3 its commit should be used in `master` branch of simplex-chat repo.
+- `master` - uses GHC 9.6.4 its commit should be used in `master` branch of simplex-chat repo.
 
 - `master-ghc8107` - its commit should be used in `master-android` (and `master-ios`) branch of simplex-chat repo. Deprecated.
 
@@ -77,28 +77,28 @@ You will have to add `/opt/homebrew/opt/openssl@1.1/bin` to your PATH in order t
 7. Independently, `master` branch of simplexmq repo should be merged to `stable` branch on stable releases.
 
 
-## Differences between GHC 8.10.7 and GHC 9.6.3
+## Differences between GHC 8.10.7 and GHC 9.6.4
 
 1. The main difference is related to `DuplicateRecordFields` extension.
 
-It is no longer possible in GHC 9.6.3 to specify type when using selectors, instead OverloadedRecordDot extension and syntax are used that need to be removed in GHC 8.10.7:
+It is no longer possible in GHC 9.6.4 to specify type when using selectors, instead OverloadedRecordDot extension and syntax are used that need to be removed in GHC 8.10.7:
 
 ```haskell
 {-# LANGUAGE DuplicateRecordFields #-}
--- use this in GHC 9.6.3 when needed
+-- use this in GHC 9.6.4 when needed
 {-# LANGUAGE OverloadedRecordDot #-}
 
--- GHC 9.6.3 syntax
+-- GHC 9.6.4 syntax
 let x = record.field
 
--- GHC 8.10.7 syntax removed in GHC 9.6.3
+-- GHC 8.10.7 syntax absent in GHC 9.6.4
 let x = field (record :: Record)
 ```
 
 It is still possible to specify type when using record update syntax, use this pragma to suppress compiler warning:
 
 ```haskell
--- use this in GHC 9.6.3 when needed
+-- use this in GHC 9.6.4 when needed
 {-# OPTIONS_GHC -fno-warn-ambiguous-fields #-}
 
 let r' = (record :: Record) {field = value}
@@ -107,7 +107,7 @@ let r' = (record :: Record) {field = value}
 2. Most monad functions now have to be imported from `Control.Monad`, and not from specific monad modules (e.g. `Control.Monad.Except`).
 
 ```haskell
--- use this in GHC 9.6.3 when needed
+-- use this in GHC 9.6.4 when needed
 import Control.Monad
 ```
 
diff --git a/scripts/desktop/build-lib-linux.sh b/scripts/desktop/build-lib-linux.sh
index c27b672e40..528e7b9f91 100755
--- a/scripts/desktop/build-lib-linux.sh
+++ b/scripts/desktop/build-lib-linux.sh
@@ -8,7 +8,7 @@ function readlink() {
 
 OS=linux
 ARCH=${1:-`uname -a | rev | cut -d' ' -f2 | rev`}
-GHC_VERSION=9.6.3
+GHC_VERSION=9.6.4
 
 if [ "$ARCH" == "aarch64" ]; then
     COMPOSE_ARCH=arm64
diff --git a/scripts/desktop/build-lib-mac.sh b/scripts/desktop/build-lib-mac.sh
index 2b0fd5376f..12067a9b53 100755
--- a/scripts/desktop/build-lib-mac.sh
+++ b/scripts/desktop/build-lib-mac.sh
@@ -5,7 +5,7 @@ set -e
 OS=mac
 ARCH="${1:-`uname -a | rev | cut -d' ' -f1 | rev`}"
 COMPOSE_ARCH=$ARCH
-GHC_VERSION=9.6.3
+GHC_VERSION=9.6.4
 
 if [ "$ARCH" == "arm64" ]; then
     ARCH=aarch64