diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4f2e83b..2463e1d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -29,11 +29,13 @@ jobs:
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
           restore-keys: ${{ runner.os }}-gradle-
       - name: Android environment
+        if: matrix.os != 'windows-latest'
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
           echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
       - name: Cached Android NDK
+        if: matrix.os != 'windows-latest'
         uses: actions/cache@v2
         with:
           path: ${{ format('{0}/ndk/{1}', env.ANDROID_HOME, env.ANDROID_NDK_VERSION) }}
@@ -43,6 +45,19 @@ jobs:
         run: |
           echo "C:\msys64\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
           rm.exe "C:/WINDOWS/system32/bash.EXE"
+      - name: Install Automake
+        if: matrix.os == 'macOS-latest'
+        run: brew install automake
+      - name: Install Automake (windows)
+        if: matrix.os == 'windows-latest'
+        uses: msys2/setup-msys2@v2
+        with:
+          path-type: minimal
+          update: true
+          install: >-
+            base-devel
+            autotools
+            mingw-w64-x86_64-gcc
       - name: Set up JDK 8
         uses: actions/setup-java@v1
         with:
@@ -54,18 +69,19 @@ jobs:
           $ANDROID_HOME/tools/bin/sdkmanager "ndk;$ANDROID_NDK_VERSION"
       - name: Setup Android
         if: matrix.os == 'windows-latest'
-        shell: bash
+        shell: msys2 {0}
         run: |
-          $ANDROID_HOME\\tools\\bin\\sdkmanager.bat "ndk;$ANDROID_NDK_VERSION"
+          echo "skip.android=true" > local.properties
       - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
           java-version: 11
-      - name: Install Automake
-        if: matrix.os == 'macOS-latest'
-        run: brew install automake
       - name: Check JVM
-        shell: bash
+        if: matrix.os != 'windows-latest'
+        run: ./gradlew jvmTest
+      - name: Check JVM (Windows)
+        if: matrix.os == 'windows-latest'
+        shell: msys2 {0}
         run: ./gradlew jvmTest
       - name: Check Linux
         if: matrix.os == 'ubuntu-latest'
@@ -87,27 +103,15 @@ jobs:
           script: ./gradlew connectedCheck
       - name: Publish Linux
         if: matrix.os == 'ubuntu-latest'
-        env:
-          BINTRAY_USER: ${{ secrets.bintray_user }}
-          BINTRAY_APIKEY: ${{ secrets.bintray_apikey }}
         shell: bash
-#          ./gradlew publishLinuxPublicationToBintrayRepository :jni:jvm:linux:publishJvmPublicationToBintrayRepository
         run: ./gradlew publishLinuxPublicationToMavenLocal :jni:jvm:linux:publishJvmPublicationToMavenLocal
       - name: Publish Windows
         if: matrix.os == 'windows-latest'
-        env:
-          BINTRAY_USER: ${{ secrets.bintray_user }}
-          BINTRAY_APIKEY: ${{ secrets.bintray_apikey }}
-        shell: bash
-#          ./gradlew :jni:jvm:mingw:publishJvmPublicationToBintrayRepository
+        shell: msys2 {0}
         run: ./gradlew :jni:jvm:mingw:publishToMavenLocal
       - name: Publish MacOS
         if: matrix.os == 'macOS-latest'
-        env:
-          BINTRAY_USER: ${{ secrets.bintray_user }}
-          BINTRAY_APIKEY: ${{ secrets.bintray_apikey }}
         shell: bash
-#          ./gradlew publish
         run: ./gradlew publishToMavenLocal
       - name: Copy artifact files
         run: |
@@ -120,9 +124,3 @@ jobs:
           path: |
             maven-local
             !maven-local/**/maven-metadata-local.xml
-#      - name: Discard
-#        if: ${{ failure() || cancelled() }}
-#        env:
-#          BINTRAY_USER: ${{ secrets.bintray_user }}
-#          BINTRAY_APIKEY: ${{ secrets.bintray_apikey }}
-#        run: ./gradlew postBintrayDiscard
diff --git a/.github/workflows/snapshot.yml b/.github/workflows/snapshot.yml
index 03b198e..a7538e3 100644
--- a/.github/workflows/snapshot.yml
+++ b/.github/workflows/snapshot.yml
@@ -54,6 +54,19 @@ jobs:
         run: |
           echo "C:\msys64\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
           rm.exe "C:/WINDOWS/system32/bash.EXE"
+      - name: Install Automake
+        if: matrix.os == 'macOS-latest'
+        run: brew install automake
+      - name: Install Automake (windows)
+        if: matrix.os == 'windows-latest'
+        uses: msys2/setup-msys2@v2
+        with:
+          path-type: minimal
+          update: true
+          install: >-
+            base-devel
+            autotools
+            mingw-w64-x86_64-gcc
       - name: Set up JDK 8
         uses: actions/setup-java@v1
         with:
@@ -63,15 +76,21 @@ jobs:
         shell: bash
         run: |
           $ANDROID_HOME/tools/bin/sdkmanager "ndk;$ANDROID_NDK_VERSION"
+      - name: Setup Android
+        if: matrix.os == 'windows-latest'
+        shell: msys2 {0}
+        run: |
+          echo "skip.android=true" > local.properties
       - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
           java-version: 11
-      - name: Install Automake
-        if: matrix.os == 'macOS-latest'
-        run: brew install automake
       - name: Check JVM
-        shell: bash
+        if: matrix.os != 'windows-latest'
+        run: ./gradlew jvmTest
+      - name: Check JVM (Windows)
+        if: matrix.os == 'windows-latest'
+        shell: msys2 {0}
         run: ./gradlew jvmTest
       - name: Check Linux
         if: matrix.os == 'ubuntu-latest'
@@ -97,7 +116,7 @@ jobs:
         run: ./gradlew publishLinuxPublicationToMavenLocal :jni:jvm:linux:publishJvmPublicationToMavenLocal -PsnapshotNumber=${{ github.run_number }} -PgitRef=${{ github.ref }}
       - name: Publish Windows
         if: matrix.os == 'windows-latest'
-        shell: bash
+        shell: msys2 {0}
         run: ./gradlew :jni:jvm:mingw:publishToMavenLocal -PsnapshotNumber=${{ github.run_number }} -PgitRef=${{ github.ref }}
       - name: Publish MacOS
         if: matrix.os == 'macOS-latest'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a94bebf..8ce6a0f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -44,11 +44,13 @@ jobs:
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
           restore-keys: ${{ runner.os }}-gradle-
       - name: Android environment
+        if: matrix.os != 'windows-latest'
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
           echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
       - name: Cached Android NDK
+        if: matrix.os != 'windows-latest'
         uses: actions/cache@v2
         with:
           path: ${{ format('{0}/ndk/{1}', env.ANDROID_HOME, env.ANDROID_NDK_VERSION) }}
@@ -58,6 +60,19 @@ jobs:
         run: |
           echo "C:\msys64\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
           rm.exe "C:/WINDOWS/system32/bash.EXE"
+      - name: Install Automake
+        if: matrix.os == 'macOS-latest'
+        run: brew install automake
+      - name: Install Automake (windows)
+        if: matrix.os == 'windows-latest'
+        uses: msys2/setup-msys2@v2
+        with:
+          path-type: minimal
+          update: true
+          install: >-
+            base-devel
+            autotools
+            mingw-w64-x86_64-gcc
       - name: Set up JDK 8
         uses: actions/setup-java@v1
         with:
@@ -69,18 +84,19 @@ jobs:
           $ANDROID_HOME/tools/bin/sdkmanager "ndk;$ANDROID_NDK_VERSION"
       - name: Setup Android
         if: matrix.os == 'windows-latest'
-        shell: bash
+        shell: msys2 {0}
         run: |
-          $ANDROID_HOME\\tools\\bin\\sdkmanager.bat "ndk;$ANDROID_NDK_VERSION"
+          echo "skip.android=true" > local.properties
       - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
           java-version: 11
-      - name: Install Automake
-        if: matrix.os == 'macOS-latest'
-        run: brew install automake
       - name: Check JVM
-        shell: bash
+        if: matrix.os != 'windows-latest'
+        run: ./gradlew jvmTest
+      - name: Check JVM (Windows)
+        if: matrix.os == 'windows-latest'
+        shell: msys2 {0}
         run: ./gradlew jvmTest
       - name: Check Linux
         if: matrix.os == 'ubuntu-latest'
diff --git a/native/build.gradle.kts b/native/build.gradle.kts
index cba74e3..c225e60 100644
--- a/native/build.gradle.kts
+++ b/native/build.gradle.kts
@@ -7,7 +7,7 @@ if (includeAndroid) {
 }
 
 val currentOs = OperatingSystem.current()
-val bash = if (currentOs.isWindows) "bash.exe" else "bash"
+val bash = "bash"
 
 val buildSecp256k1 by tasks.creating { group = "build" }
 
@@ -27,7 +27,7 @@ val buildSecp256k1Host by tasks.creating(Exec::class) {
 
     workingDir = projectDir
     environment("TARGET", target)
-    commandLine(bash, "build.sh")
+    commandLine(bash, "-l", "build.sh")
 }
 
 val buildSecp256k1Ios by tasks.creating(Exec::class) {