infra: Bump android-21 to android-24 on CI

I believe we still need to stay working on android-21, but
google/benchmark doesn't compile before android-24. I don't believe
there are any changes of interest for us between android-21 and
android-24[*], so just testing at 24 seems easiest.

[*] Searching around, the Rust getrandom crate's docs suggest that
getrandom is available starting android-23. As I understand it, this is
not quite right because Android devices rarely get their kernel updated,
so it's not until android-28 when we can assume it, due to older devices
getting dropped and getrandom being added to CTS.

Bug: 383769319
Change-Id: I190b297b52c3eecdcf2cc131412d23abf40ea40e
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/85288
Commit-Queue: Xiangfei Ding <xfding@google.com>
Auto-Submit: David Benjamin <davidben@google.com>
Reviewed-by: Xiangfei Ding <xfding@google.com>
diff --git a/infra/config/generated/cr-buildbucket.cfg b/infra/config/generated/cr-buildbucket.cfg
index cb1e22f..39e2875 100644
--- a/infra/config/generated/cr-buildbucket.cfg
+++ b/infra/config/generated/cr-buildbucket.cfg
@@ -21,7 +21,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -45,7 +45,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -69,7 +69,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\",\"OPENSSL_NO_ASM\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\",\"OPENSSL_NO_ASM\":\"1\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -93,7 +93,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"FIPS\":\"1\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -117,7 +117,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -141,7 +141,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -165,7 +165,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_ARM_MODE\":\"arm\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_ARM_MODE\":\"arm\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -189,7 +189,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -213,7 +213,7 @@
         cipd_version: "refs/heads/main"
         properties_j: "$gatekeeper:{\"group\":\"client.boringssl\"}"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\",\"CMAKE_CXX_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\",\"CMAKE_C_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\",\"CMAKE_CXX_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\",\"CMAKE_C_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\"}"
       }
       execution_timeout_secs: 3600
       caches {
@@ -1429,7 +1429,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1445,7 +1445,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1462,7 +1462,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1478,7 +1478,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1495,7 +1495,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\",\"OPENSSL_NO_ASM\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\",\"OPENSSL_NO_ASM\":\"1\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1511,7 +1511,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\",\"OPENSSL_NO_ASM\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\",\"OPENSSL_NO_ASM\":\"1\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1528,7 +1528,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"FIPS\":\"1\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1544,7 +1544,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"FIPS\":\"1\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1561,7 +1561,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1577,7 +1577,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"arm64-v8a\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1594,7 +1594,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1609,7 +1609,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_ARM_MODE\":\"arm\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_ARM_MODE\":\"arm\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1625,7 +1625,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_ARM_MODE\":\"arm\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_ARM_MODE\":\"arm\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1643,7 +1643,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1660,7 +1660,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1676,7 +1676,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\",\"BUILD_SHARED_LIBS\":\"1\",\"FIPS\":\"1\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
@@ -1693,7 +1693,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\",\"CMAKE_CXX_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\",\"CMAKE_C_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\",\"CMAKE_CXX_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\",\"CMAKE_C_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\"}"
       }
       execution_timeout_secs: 3600
       service_account: "boringssl-try-builder@chops-service-accounts.iam.gserviceaccount.com"
@@ -1709,7 +1709,7 @@
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/main"
         properties_j: "android:true"
-        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-21\",\"CMAKE_BUILD_TYPE\":\"Release\",\"CMAKE_CXX_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\",\"CMAKE_C_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\"}"
+        properties_j: "cmake_args:{\"ANDROID_ABI\":\"armeabi-v7a\",\"ANDROID_PLATFORM\":\"android-24\",\"CMAKE_BUILD_TYPE\":\"Release\",\"CMAKE_CXX_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\",\"CMAKE_C_FLAGS\":\"-DOPENSSL_NO_STATIC_NEON_FOR_TESTING=1\"}"
         properties_j: "run_ssl_tests:false"
         properties_j: "run_unit_tests:false"
       }
diff --git a/infra/config/main.star b/infra/config/main.star
index 7ec18ef..dccedd4 100755
--- a/infra/config/main.star
+++ b/infra/config/main.star
@@ -356,7 +356,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "arm64-v8a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
         },
     },
 )
@@ -371,7 +371,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "arm64-v8a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             "CMAKE_BUILD_TYPE": "Release",
         },
     },
@@ -387,7 +387,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "arm64-v8a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             # FIPS mode on Android uses shared libraries.
             "BUILD_SHARED_LIBS": "1",
             "FIPS": "1",
@@ -407,7 +407,7 @@
         "cmake_args": {
             "OPENSSL_NO_ASM": "1",
             "ANDROID_ABI": "arm64-v8a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             # FIPS mode on Android uses shared libraries.
             "BUILD_SHARED_LIBS": "1",
             "FIPS": "1",
@@ -429,7 +429,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "arm64-v8a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             "FIPS": "1",
         },
     },
@@ -445,7 +445,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "armeabi-v7a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
         },
     },
 )
@@ -460,7 +460,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "armeabi-v7a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             "CMAKE_BUILD_TYPE": "Release",
             # Although Android now requires NEON support, on one builder, we
             # ignore the |__ARM_NEON| preprocessor option, to keep testing
@@ -482,7 +482,7 @@
         "android": True,
         "cmake_args": {
             "ANDROID_ABI": "armeabi-v7a",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             # FIPS mode on Android uses shared libraries.
             "BUILD_SHARED_LIBS": "1",
             "FIPS": "1",
@@ -500,7 +500,7 @@
         "cmake_args": {
             "ANDROID_ABI": "armeabi-v7a",
             "ANDROID_ARM_MODE": "arm",
-            "ANDROID_PLATFORM": "android-21",
+            "ANDROID_PLATFORM": "android-24",
             "CMAKE_BUILD_TYPE": "Release",
         },
     },