diff --git a/.ci.yaml b/.ci.yaml
index f3d00869e1b..fc062d644ee 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -29,7 +29,7 @@ platform_properties:
       dependencies: >-
         [
           {"dependency": "android_sdk", "version": "version:36v3"},
-          {"dependency": "open_jdk", "version": "version:17"},
+          {"dependency": "open_jdk", "version": "version:21"},
           {"dependency": "curl", "version": "version:7.64.0"},
           {"dependency": "avd_cipd_version", "version": "build_id:8719362231152674241"}
         ]
@@ -127,7 +127,7 @@ targets:
       dependencies: >-
         [
           {"dependency": "clang", "version": "git_revision:5d5aba78dbbee75508f01bcaa69aedb2ab79065a"},
-          {"dependency": "open_jdk", "version": "version:17"}
+          {"dependency": "open_jdk", "version": "version:21"}
         ]
       env_variables: >-
         {
diff --git a/packages/camera/camera_android/android/build.gradle b/packages/camera/camera_android/android/build.gradle
index 3f521d2c800..b1562abd58c 100644
--- a/packages/camera/camera_android/android/build.gradle
+++ b/packages/camera/camera_android/android/build.gradle
@@ -68,7 +68,7 @@ buildFeatures {
 dependencies {
     implementation("androidx.annotation:annotation:1.9.1")
     testImplementation("junit:junit:4.13.2")
-    testImplementation("org.mockito:mockito-inline:5.2.0")
+    testImplementation("org.mockito:mockito-core:5.17.0")
     testImplementation("androidx.test:core:1.7.0")
     testImplementation("org.robolectric:robolectric:4.15.1")
 }
diff --git a/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/resolution/ResolutionFeature.java b/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/resolution/ResolutionFeature.java
index def498b9666..9cc243fa150 100644
--- a/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/resolution/ResolutionFeature.java
+++ b/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/resolution/ResolutionFeature.java
@@ -112,7 +112,7 @@ public void setValue(@NonNull ResolutionPreset value) {
   }
 
   @Override
-  public boolean checkIsSupported() {
+  public final boolean checkIsSupported() {
     return cameraId >= 0;
   }
 
diff --git a/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/sensororientation/SensorOrientationFeature.java b/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/sensororientation/SensorOrientationFeature.java
index 67b61cfab19..27707f927f7 100644
--- a/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/sensororientation/SensorOrientationFeature.java
+++ b/packages/camera/camera_android/android/src/main/java/io/flutter/plugins/camera/features/sensororientation/SensorOrientationFeature.java
@@ -58,7 +58,7 @@ public Integer getValue() {
   }
 
   @Override
-  public void setValue(@NonNull Integer value) {
+  public final void setValue(@NonNull Integer value) {
     this.currentSetting = value;
   }
 
diff --git a/packages/camera/camera_android/android/src/test/java/io/flutter/plugins/camera/ImageSaverTests.java b/packages/camera/camera_android/android/src/test/java/io/flutter/plugins/camera/ImageSaverTests.java
index 6393d8c8b98..963066aa876 100644
--- a/packages/camera/camera_android/android/src/test/java/io/flutter/plugins/camera/ImageSaverTests.java
+++ b/packages/camera/camera_android/android/src/test/java/io/flutter/plugins/camera/ImageSaverTests.java
@@ -22,8 +22,6 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.MockedStatic;
-import org.mockito.invocation.InvocationOnMock;
-import org.mockito.stubbing.Answer;
 
 public class ImageSaverTests {
 
@@ -32,7 +30,7 @@ public class ImageSaverTests {
   ImageSaver.Callback mockCallback;
   ImageSaver imageSaver;
   Image.Plane mockPlane;
-  ByteBuffer mockBuffer;
+  ByteBuffer byteBuffer;
   MockedStatic<ImageSaver.FileOutputStreamFactory> mockFileOutputStreamFactory;
   FileOutputStream mockFileOutputStream;
 
@@ -42,24 +40,12 @@ public void setup() {
     mockFile = mock(File.class);
     when(mockFile.getAbsolutePath()).thenReturn("absolute/path");
     mockPlane = mock(Image.Plane.class);
-    mockBuffer = mock(ByteBuffer.class);
-    when(mockBuffer.remaining()).thenReturn(3);
-    when(mockBuffer.get(any()))
-        .thenAnswer(
-            new Answer<Object>() {
-              @Override
-              public Object answer(InvocationOnMock invocation) throws Throwable {
-                byte[] bytes = invocation.getArgument(0);
-                bytes[0] = 0x42;
-                bytes[1] = 0x00;
-                bytes[2] = 0x13;
-                return mockBuffer;
-              }
-            });
+    byte[] desiredContent = {0x42, 0x00, 0x13};
+    byteBuffer = ByteBuffer.wrap(desiredContent);
 
     // Set up mocked image dependency
     mockImage = mock(Image.class);
-    when(mockPlane.getBuffer()).thenReturn(mockBuffer);
+    when(mockPlane.getBuffer()).thenReturn(byteBuffer);
     when(mockImage.getPlanes()).thenReturn(new Image.Plane[] {mockPlane});
 
     // Set up mocked FileOutputStream
diff --git a/packages/google_sign_in/google_sign_in_android/android/build.gradle b/packages/google_sign_in/google_sign_in_android/android/build.gradle
index 7d7943cdce6..8ed105f008b 100644
--- a/packages/google_sign_in/google_sign_in_android/android/build.gradle
+++ b/packages/google_sign_in/google_sign_in_android/android/build.gradle
@@ -73,5 +73,5 @@ dependencies {
     implementation("com.google.android.libraries.identity.googleid:googleid:1.1.1")
     implementation("com.google.android.gms:play-services-auth:21.4.0")
     testImplementation("junit:junit:4.13.2")
-    testImplementation("org.mockito:mockito-inline:5.2.0")
+    testImplementation("org.mockito:mockito-core:5.17.0")
 }
diff --git a/packages/local_auth/local_auth_android/android/build.gradle b/packages/local_auth/local_auth_android/android/build.gradle
index 780cf22b94a..0562219409e 100644
--- a/packages/local_auth/local_auth_android/android/build.gradle
+++ b/packages/local_auth/local_auth_android/android/build.gradle
@@ -60,7 +60,7 @@ dependencies {
     api("androidx.biometric:biometric:1.1.0")
     api("androidx.fragment:fragment:1.8.9")
     testImplementation("junit:junit:4.13.2")
-    testImplementation("org.mockito:mockito-inline:5.2.0")
+    testImplementation("org.mockito:mockito-core:5.17.0")
     testImplementation("org.robolectric:robolectric:4.15.1")
     androidTestImplementation("androidx.test:runner:1.7.0")
     androidTestImplementation("androidx.test:rules:1.7.0")