diff --git a/.gitignore b/.gitignore
index 22d1350d4..f071777c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,13 @@
 ## Build generated
 build/
 DerivedData/
+Frameworks/
+
+## Source / dependencies
+submodules/
 
 ## Static libraries
-IVPNClient/liboqs/liboqs-iphoneos.a
-IVPNClient/liboqs/liboqs-iphonesimulator.a
+IVPNClient/liboqs/*.a
 
 ## Various settings
 *.pbxuser
@@ -70,6 +73,3 @@ OpenVPNConf.swift
 fastlane/test_output
 fastlane/report.xml
 fastlane/Appfile
-
-# Frameworks
-Frameworks
diff --git a/IVPNClient/liboqs/liboqs.a b/IVPNClient/liboqs/liboqs.a
deleted file mode 100644
index 9c6884162..000000000
Binary files a/IVPNClient/liboqs/liboqs.a and /dev/null differ
diff --git a/README.md b/README.md
index 98fc53cc7..2340547f5 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,22 @@ cp IVPNClient/Config/OpenVPNConf.template.swift IVPNClient/Config/OpenVPNConf.sw
 Build `V2RayControl.xcframework`:
 
 ```sh
-./build.sh
+./build-v2ray.sh
+```
+
+### Build liboqs.a
+
+To compile  [liboqs](https://github.com/open-quantum-safe/liboqs), additional packages are required:  
+
+``` 
+brew install cmake ninja openssl@1.1 wget doxygen graphviz astyle valgrind
+pip3 install pytest pytest-xdist pyyaml
+```
+
+Build `liboqs.a`:  
+
+```sh
+./build-liboqs.sh
 ```
 
 ### Fastlane configuration
diff --git a/build-liboqs.sh b/build-liboqs.sh
new file mode 100755
index 000000000..e670e93a3
--- /dev/null
+++ b/build-liboqs.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+BRANCH=ivpn-ios-app
+IN_LIBOQS=lib/Release/liboqs.a
+OUT_LIBOQS_IPHONEOS=../../IVPNClient/liboqs/liboqs-iphoneos.a
+OUT_LIBOQS_IPHONESIMULATOR=../../IVPNClient/liboqs/liboqs-iphonesimulator.a
+
+set -e
+
+# Clone liboqs
+echo "=> Clone liboqs"
+mkdir -p submodules
+cd submodules
+if [ ! -d "liboqs" ] ; then
+    git clone  --depth 1 --branch ${BRANCH} https://github.com/ivpn/liboqs
+fi
+cd liboqs
+
+# liboqs for iphoneos
+echo "=> Build liboqs-iphoneos.a"
+cmake -G Xcode -DOQS_USE_OPENSSL=OFF -DOQS_BUILD_ONLY_LIB=ON -DOQS_DIST_BUILD=ON -DOQS_MINIMAL_BUILD="KEM_kyber_1024;" -DCMAKE_TOOLCHAIN_FILE=.CMake/toolchain_ios.cmake -DPLATFORM=OS64
+cmake --build . --config Release
+
+echo "=> Copy liboqs.a to ${OUT_LIBOQS_IPHONEOS}"
+cp -f $IN_LIBOQS $OUT_LIBOQS_IPHONEOS
+
+echo "=> Clean files"
+rm -rf $IN_LIBOQS
+git clean -fd
+
+echo "=> Build completed for ${OUT_LIBOQS_IPHONEOS}"
+
+# liboqs for iphonesimulator
+echo "=> Build liboqs-iphonesimulator.a"
+cmake -G Xcode -DOQS_USE_OPENSSL=OFF -DOQS_BUILD_ONLY_LIB=ON -DOQS_DIST_BUILD=ON -DOQS_MINIMAL_BUILD="KEM_kyber_1024;" -DCMAKE_TOOLCHAIN_FILE=.CMake/toolchain_ios.cmake -DPLATFORM=SIMULATORARM64
+cmake --build . --config Release
+
+echo "=> Copy liboqs.a to ${OUT_LIBOQS_IPHONESIMULATOR}"
+cp -f $IN_LIBOQS $OUT_LIBOQS_IPHONESIMULATOR
+
+echo "=> Clean files"
+rm -rf $IN_LIBOQS
+git clean -fd
+
+echo "=> Build completed for ${OUT_LIBOQS_IPHONESIMULATOR}"
+
+
+echo "=> BUILD SUCCESSFUL"
diff --git a/build.sh b/build-v2ray.sh
similarity index 100%
rename from build.sh
rename to build-v2ray.sh