diff --git a/.ci/docker/build.sh b/.ci/docker/build.sh
index d811b98cf4d..edaf3dbaba1 100755
--- a/.ci/docker/build.sh
+++ b/.ci/docker/build.sh
@@ -155,13 +155,13 @@ case "$image" in
     CONDA_CMAKE=yes
     ONNX=yes
     ;;
-  pytorch-linux-focal-py3-clang9-android-ndk-r19c)
+  pytorch-linux-focal-py3-clang9-android-ndk-r21e)
     ANACONDA_PYTHON_VERSION=3.8
     CLANG_VERSION=9
     LLVMDEV=yes
     PROTOBUF=yes
     ANDROID=yes
-    ANDROID_NDK_VERSION=r19c
+    ANDROID_NDK_VERSION=r21e
     GRADLE_VERSION=6.8.3
     NINJA_VERSION=1.9.0
     ;;
diff --git a/.ci/docker/common/install_base.sh b/.ci/docker/common/install_base.sh
index 0f85e3105e1..f667cb06d6a 100755
--- a/.ci/docker/common/install_base.sh
+++ b/.ci/docker/common/install_base.sh
@@ -9,10 +9,7 @@ install_ubuntu() {
   #   "$UBUNTU_VERSION" == "18.04"*
   # instead of
   #   "$UBUNTU_VERSION" == "18.04"
-  if [[ "$UBUNTU_VERSION" == "18.04"* ]]; then
-    cmake3="cmake=3.10*"
-    maybe_libiomp_dev="libiomp-dev"
-  elif [[ "$UBUNTU_VERSION" == "20.04"* ]]; then
+  if [[ "$UBUNTU_VERSION" == "20.04"* ]]; then
     cmake3="cmake=3.16*"
     maybe_libiomp_dev=""
   elif [[ "$UBUNTU_VERSION" == "22.04"* ]]; then
diff --git a/.circleci/cimodel/data/simple/util/docker_constants.py b/.circleci/cimodel/data/simple/util/docker_constants.py
index 9a96b9f9f2a..8d648539dbb 100644
--- a/.circleci/cimodel/data/simple/util/docker_constants.py
+++ b/.circleci/cimodel/data/simple/util/docker_constants.py
@@ -32,4 +32,4 @@ def gen_mobile_docker(specifier):
 
 DOCKER_IMAGE_ASAN, DOCKER_REQUIREMENT_ASAN = gen_mobile_docker("asan")
 
-DOCKER_IMAGE_NDK, DOCKER_REQUIREMENT_NDK = gen_mobile_docker("android-ndk-r19c")
+DOCKER_IMAGE_NDK, DOCKER_REQUIREMENT_NDK = gen_mobile_docker("android-ndk-r21e")
diff --git a/.github/workflows/_android-full-build-test.yml b/.github/workflows/_android-full-build-test.yml
index 29b58c851e6..20165efe8df 100644
--- a/.github/workflows/_android-full-build-test.yml
+++ b/.github/workflows/_android-full-build-test.yml
@@ -157,7 +157,7 @@ jobs:
 
           # run gradle buildRelease
           (echo "./.circleci/scripts/build_android_gradle.sh" | docker exec \
-            -e BUILD_ENVIRONMENT="pytorch-linux-focal-py3-clang9-android-ndk-r19c-gradle-build" \
+            -e BUILD_ENVIRONMENT="pytorch-linux-focal-py3-clang9-android-ndk-r21e-gradle-build" \
             -e MAX_JOBS="$(nproc --ignore=2)" \
             -e AWS_DEFAULT_REGION \
             -e PR_NUMBER \
diff --git a/.github/workflows/docker-builds.yml b/.github/workflows/docker-builds.yml
index 13ec52d8f5b..dfeb89f72fc 100644
--- a/.github/workflows/docker-builds.yml
+++ b/.github/workflows/docker-builds.yml
@@ -42,7 +42,7 @@ jobs:
           - docker-image-name: pytorch-linux-focal-rocm-n-1-py3
           - docker-image-name: pytorch-linux-focal-rocm-n-py3
           - docker-image-name: pytorch-linux-jammy-cuda11.8-cudnn8-py3.8-clang12
-          - docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r19c
+          - docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r21e
           - docker-image-name: pytorch-linux-jammy-py3.8-gcc11
           - docker-image-name: pytorch-linux-jammy-py3.8-gcc11-inductor-benchmarks
           - docker-image-name: pytorch-linux-jammy-py3-clang15-asan
diff --git a/.github/workflows/pull.yml b/.github/workflows/pull.yml
index e5f78ce8abe..8173ffba551 100644
--- a/.github/workflows/pull.yml
+++ b/.github/workflows/pull.yml
@@ -252,7 +252,7 @@ jobs:
     uses: ./.github/workflows/_linux-build.yml
     with:
       build-environment: linux-focal-py3-clang9-mobile-custom-build-static
-      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r19c
+      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r21e
       build-generates-artifacts: false
       test-matrix: |
         { include: [
@@ -319,23 +319,23 @@ jobs:
           { config: "default", shard: 1, num_shards: 1, runner: "linux.4xlarge.nvidia.gpu" },
         ]}
 
-  linux-focal-py3-clang9-android-ndk-r19c-gradle-custom-build-single:
-    name: linux-focal-py3-clang9-android-ndk-r19c-gradle-custom-build-single
+  linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single:
+    name: linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single
     uses: ./.github/workflows/_android-build-test.yml
     with:
-      build-environment: linux-focal-py3-clang9-android-ndk-r19c-gradle-custom-build-single
-      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r19c
+      build-environment: linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single
+      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r21e
       test-matrix: |
         { include: [
           { config: "default", shard: 1, num_shards: 1, runner: "linux.2xlarge" },
         ]}
 
-  linux-focal-py3-clang9-android-ndk-r19c-gradle-custom-build-single-full-jit:
-    name: linux-focal-py3-clang9-android-ndk-r19c-gradle-custom-build-single-full-jit
+  linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single-full-jit:
+    name: linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single-full-jit
     uses: ./.github/workflows/_android-build-test.yml
     with:
-      build-environment: linux-focal-py3-clang9-android-ndk-r19c-gradle-custom-build-single-full-jit
-      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r19c
+      build-environment: linux-focal-py3-clang9-android-ndk-r21e-gradle-custom-build-single-full-jit
+      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r21e
       test-matrix: |
         { include: [
           { config: "default", shard: 1, num_shards: 1, runner: "linux.2xlarge" },
diff --git a/.github/workflows/trunk.yml b/.github/workflows/trunk.yml
index 5bc13506b43..c4831d364cb 100644
--- a/.github/workflows/trunk.yml
+++ b/.github/workflows/trunk.yml
@@ -76,12 +76,12 @@ jobs:
           { config: "default", shard: 1, num_shards: 1 },
         ]}
 
-  pytorch-linux-focal-py3-clang9-android-ndk-r19c-build:
-    name: pytorch-linux-focal-py3-clang9-android-ndk-r19c-build
+  pytorch-linux-focal-py3-clang9-android-ndk-r21e-build:
+    name: pytorch-linux-focal-py3-clang9-android-ndk-r21e-build
     uses: ./.github/workflows/_android-full-build-test.yml
     with:
-      build-environment: pytorch-linux-focal-py3-clang9-android-ndk-r19c-build
-      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r19c
+      build-environment: pytorch-linux-focal-py3-clang9-android-ndk-r21e-build
+      docker-image-name: pytorch-linux-focal-py3-clang9-android-ndk-r21e
       test-matrix: |
         { include: [
           { config: "default", shard: 1, num_shards: 1, runner: "linux.2xlarge" },