diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1201f43..51f7a61 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -32,7 +32,7 @@ jobs:
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
-          echo "ANDROID_NDK_VERSION=21.3.6528147" >> $GITHUB_ENV
+          echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
       - name: Cached Android NDK
         uses: actions/cache@v2
         with:
@@ -80,6 +80,8 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 29
+          emulator-build: 7425822  # workaround to emulator bug: https://github.com/ReactiveCircus/android-emulator-runner/issues/160
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
           ndk: ${{ env.ANDROID_NDK_VERSION }}
           cmake: 3.10.2.4988404
           script: ./gradlew connectedCheck
diff --git a/.github/workflows/snapshot.yml b/.github/workflows/snapshot.yml
index f9fdfbb..7cfb084 100644
--- a/.github/workflows/snapshot.yml
+++ b/.github/workflows/snapshot.yml
@@ -41,7 +41,7 @@ jobs:
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
-          echo "ANDROID_NDK_VERSION=21.3.6528147" >> $GITHUB_ENV
+          echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
       - name: Cached Android NDK
         uses: actions/cache@v2
         with:
@@ -89,6 +89,8 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 29
+          -build: 7425822  # workaround to emulator bug: https://github.com/ReactiveCircus/android-emulator-runner/issues/160
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
           ndk: ${{ env.ANDROID_NDK_VERSION }}
           cmake: 3.10.2.4988404
           script: ./gradlew connectedCheck
@@ -157,4 +159,4 @@ jobs:
 #        env:
 #          BINTRAY_USER: ${{ secrets.bintray_user }}
 #          BINTRAY_APIKEY: ${{ secrets.bintray_apikey }}
-#        run: ./gradlew postBintrayPublish -PsnapshotNumber=${{ github.run_number }} -PgitRef=${{ github.ref }}
\ No newline at end of file
+#        run: ./gradlew postBintrayPublish -PsnapshotNumber=${{ github.run_number }} -PgitRef=${{ github.ref }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ceafd8d..e65f18b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -47,7 +47,7 @@ jobs:
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
-          echo "ANDROID_NDK_VERSION=21.3.6528147" >> $GITHUB_ENV
+          echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
       - name: Cached Android NDK
         uses: actions/cache@v2
         with:
@@ -95,6 +95,8 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 29
+          emulator-build: 7425822  # workaround to emulator bug: https://github.com/ReactiveCircus/android-emulator-runner/issues/160
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
           ndk: ${{ env.ANDROID_NDK_VERSION }}
           cmake: 3.10.2.4988404
           script: ./gradlew connectedCheck
diff --git a/jni/android/build.gradle.kts b/jni/android/build.gradle.kts
index a41b830..2243607 100644
--- a/jni/android/build.gradle.kts
+++ b/jni/android/build.gradle.kts
@@ -35,7 +35,7 @@ android {
             setPath("src/main/CMakeLists.txt")
         }
     }
-    ndkVersion = "21.3.6528147"
+    ndkVersion = "21.4.7075529"
 
     afterEvaluate {
         tasks.withType<com.android.build.gradle.tasks.factory.AndroidUnitTest>().all {