diff --git a/app/src/main/jniLibs/armeabi-v7a/librustls_platform_verifier.so b/app/src/main/jniLibs/armeabi-v7a/librustls_platform_verifier.so
new file mode 100755
index 0000000..c132c70
Binary files /dev/null and b/app/src/main/jniLibs/armeabi-v7a/librustls_platform_verifier.so differ
diff --git a/rustls-platform-verifier/src/tests/ffi.rs b/rustls-platform-verifier/src/tests/ffi.rs
index f66b49d..9030cc3 100644
--- a/rustls-platform-verifier/src/tests/ffi.rs
+++ b/rustls-platform-verifier/src/tests/ffi.rs
@@ -29,7 +29,7 @@ mod android {
     const SUCCESS_MARKER: &str = "success";
 
     fn run_android_test<'a>(
-        env: &'a JNIEnv,
+        env: &'a mut JNIEnv,
         cx: JObject,
         suite_name: &'static str,
         test_cases: &'static [fn()],
@@ -86,53 +86,53 @@ mod android {
 
     #[export_name = "Java_org_rustls_platformverifier_CertificateVerifierTests_mockTests"]
     pub extern "C" fn rustls_platform_verifier_mock_test_suite(
-        env: JNIEnv,
+        mut env: JNIEnv,
         _class: JClass,
         cx: JObject,
     ) -> jstring {
         log::info!("running mock test suite...");
 
         run_android_test(
-            &env,
+            &mut env,
             cx,
             "mock tests",
             tests::verification_mock::ALL_TEST_CASES,
         )
-        .into_inner()
+        .into_raw()
     }
 
     #[export_name = "Java_org_rustls_platformverifier_CertificateVerifierTests_verifyMockRootUsage"]
     pub extern "C" fn rustls_platform_verifier_verify_mock_root_usage(
-        env: JNIEnv,
+        mut env: JNIEnv,
         _class: JClass,
         cx: JObject,
     ) -> jstring {
         log::info!("verifying mock roots are not used by default...");
 
         run_android_test(
-            &env,
+            &mut env,
             cx,
             "mock root verification",
             &[tests::verification_mock::verification_without_mock_root],
         )
-        .into_inner()
+        .into_raw()
     }
 
     #[export_name = "Java_org_rustls_platformverifier_CertificateVerifierTests_realWorldTests"]
     pub extern "C" fn rustls_platform_verifier_real_world_test_suite(
-        env: JNIEnv,
+        mut env: JNIEnv,
         _class: JClass,
         cx: JObject,
     ) -> jstring {
         log::info!("running real world suite...");
 
         run_android_test(
-            &env,
+            &mut env,
             cx,
             "real world",
             tests::verification_real_world::ALL_TEST_CASES,
         )
-        .into_inner()
+        .into_raw()
     }
 }
 
diff --git a/rustls-platform-verifier/src/verification/android.rs b/rustls-platform-verifier/src/verification/android.rs
index b80e41d..fa8dcc8 100644
--- a/rustls-platform-verifier/src/verification/android.rs
+++ b/rustls-platform-verifier/src/verification/android.rs
@@ -58,8 +58,7 @@ impl Default for Verifier {
 #[cfg(any(test, feature = "ffi-testing"))]
 impl Drop for Verifier {
     fn drop(&mut self) {
-        with_context::<_, ()>(|cx| {
-            let env = cx.env();
+        with_context::<_, ()>(|cx, env| {
             env.call_static_method(CERT_VERIFIER_CLASS.get(cx)?, "clearMockRoots", "()V", &[])?
                 .v()?;
             Ok(())
@@ -160,7 +159,7 @@ impl Verifier {
                         CERT_VERIFIER_CLASS.get(cx)?,
                         "addMockRoot",
                         "([B)V",
-                        &[JValue::from(mock_root)],
+                        &[JValue::from(&mock_root)],
                     )?
                     .v()
                     .expect("failed to add test root")