diff --git a/.github/workflows/ton-x86-64-windows.yml b/.github/workflows/ton-x86-64-windows.yml
index 670261839..0fa270213 100644
--- a/.github/workflows/ton-x86-64-windows.yml
+++ b/.github/workflows/ton-x86-64-windows.yml
@@ -9,7 +9,7 @@ defaults:
 jobs:
   build:
 
-    runs-on: windows-2022
+    runs-on: windows-2019
 
     steps:
       - name: Get Current OS version
diff --git a/assembly/native/build-windows-github.bat b/assembly/native/build-windows-github.bat
index 7cad8c7e5..fd19de469 100644
--- a/assembly/native/build-windows-github.bat
+++ b/assembly/native/build-windows-github.bat
@@ -1,2 +1,2 @@
-call "C:\Program Files\Microsoft Visual Studio\2022\%1\VC\Auxiliary\Build\vcvars64.bat"
-call build-windows.bat -t
\ No newline at end of file
+call "C:\Program Files\Microsoft Visual Studio\2019\%1\VC\Auxiliary\Build\vcvars64.bat"
+call build-windows.bat -t
diff --git a/assembly/native/build-windows.bat b/assembly/native/build-windows.bat
index 60f827cbe..b1d15c16c 100644
--- a/assembly/native/build-windows.bat
+++ b/assembly/native/build-windows.bat
@@ -1,4 +1,4 @@
-REM execute this script inside elevated (Run as Administrator) console "x64 Native Tools Command Prompt for VS 2022"
+REM execute this script inside elevated (Run as Administrator) console "x64 Native Tools Command Prompt for VS 2019"
 
 echo off
 
@@ -62,7 +62,7 @@ if not exist "secp256k1" (
 git clone https://github.com/bitcoin-core/secp256k1.git
 cd secp256k1
 git checkout v0.3.2
-cmake -G "Visual Studio 17 2022" -A x64 -S . -B build -DSECP256K1_ENABLE_MODULE_RECOVERY=ON -DBUILD_SHARED_LIBS=OFF
+cmake -G "Visual Studio 14 2019" -A x64 -S . -B build -DSECP256K1_ENABLE_MODULE_RECOVERY=ON -DBUILD_SHARED_LIBS=OFF
 IF %errorlevel% NEQ 0 (
   echo Can't configure secp256k1
   exit /b %errorlevel%
diff --git a/assembly/wasm/fift-func-wasm-build-ubuntu.sh b/assembly/wasm/fift-func-wasm-build-ubuntu.sh
index 17de8cdf6..7687a63f5 100644
--- a/assembly/wasm/fift-func-wasm-build-ubuntu.sh
+++ b/assembly/wasm/fift-func-wasm-build-ubuntu.sh
@@ -57,7 +57,7 @@ cd ..
 
 git clone https://github.com/jedisct1/libsodium
 cd libsodium
-git checkout 1.0.19-RELEASE
+git checkout 1.0.18-RELEASE
 SODIUM_DIR=`pwd`
 cd ..