diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2463e1d..6856c44 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,7 +33,7 @@ jobs:
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
-          echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
+          echo "ANDROID_NDK_VERSION=25.2.9519653" >> $GITHUB_ENV
       - name: Cached Android NDK
         if: matrix.os != 'windows-latest'
         uses: actions/cache@v2
@@ -96,10 +96,9 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 27
-          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: ${{ env.ANDROID_NDK_VERSION }}
-          cmake: 3.10.2.4988404
+          cmake: 3.22.1
           script: ./gradlew connectedCheck
       - name: Publish Linux
         if: matrix.os == 'ubuntu-latest'
diff --git a/.github/workflows/snapshot.yml b/.github/workflows/snapshot.yml
index a7538e3..dd788d2 100644
--- a/.github/workflows/snapshot.yml
+++ b/.github/workflows/snapshot.yml
@@ -42,7 +42,7 @@ jobs:
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
-          echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
+          echo "ANDROID_NDK_VERSION=25.2.9519653" >> $GITHUB_ENV
       - name: Cached Android NDK
         if: matrix.os != 'windows-latest'
         uses: actions/cache@v2
@@ -105,10 +105,9 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 27
-          -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: ${{ env.ANDROID_NDK_VERSION }}
-          cmake: 3.10.2.4988404
+          cmake: 3.22.1
           script: ./gradlew connectedCheck
       - name: Publish Linux
         if: matrix.os == 'ubuntu-latest'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8ce6a0f..6add186 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -48,7 +48,7 @@ jobs:
         shell: bash
         run: |
           echo "ANDROID_HOME=$ANDROID_HOME" >> $GITHUB_ENV
-          echo "ANDROID_NDK_VERSION=21.4.7075529" >> $GITHUB_ENV
+          echo "ANDROID_NDK_VERSION=25.2.9519653" >> $GITHUB_ENV
       - name: Cached Android NDK
         if: matrix.os != 'windows-latest'
         uses: actions/cache@v2
@@ -111,8 +111,7 @@ jobs:
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 27
-          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
+          cmake: 3.22.1
           script: ./gradlew connectedCheck
diff --git a/build.gradle.kts b/build.gradle.kts
index 9662153..1d425ed 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -22,7 +22,7 @@ buildscript {
 
 allprojects {
     group = "fr.acinq.secp256k1"
-    version = "0.9.0"
+    version = "0.9.1-SNAPSHOT"
 
     repositories {
         google()