diff --git a/lib/systems/examples.nix b/lib/systems/examples.nix
index ca562d2e4565..40e2b8fcefbc 100644
--- a/lib/systems/examples.nix
+++ b/lib/systems/examples.nix
@@ -46,7 +46,7 @@ rec {
 
   armv7a-android-prebuilt = {
     config = "armv7a-unknown-linux-androideabi";
-    sdkVer = "24";
+    sdkVer = "29";
     ndkVer = "18b";
     platform = platforms.armv7a-android;
     useAndroidPrebuilt = true;
@@ -54,7 +54,7 @@ rec {
 
   aarch64-android-prebuilt = {
     config = "aarch64-unknown-linux-android";
-    sdkVer = "24";
+    sdkVer = "29";
     ndkVer = "18b";
     platform = platforms.aarch64-multiplatform;
     useAndroidPrebuilt = true;
diff --git a/pkgs/development/androidndk-pkgs/default.nix b/pkgs/development/androidndk-pkgs/default.nix
index 7bb779d1d138..ce5a868f4ecd 100644
--- a/pkgs/development/androidndk-pkgs/default.nix
+++ b/pkgs/development/androidndk-pkgs/default.nix
@@ -2,9 +2,9 @@
 }:
 
 {
-  "18b" =
+  "21" =
     let
-      ndkVersion = "18.1.5063045";
+      ndkVersion = "21.0.6113669";
 
       buildAndroidComposition = buildPackages.buildPackages.androidenv.composeAndroidPackages {
         includeNDK = true;
@@ -28,6 +28,7 @@
       # these two really are the same.
       buildAndroidndk = buildAndroidComposition.ndk-bundle;
       androidndk = androidComposition.ndk-bundle;
-      targetAndroidndkPkgs = targetPackages.androidndkPkgs_18b;
+      targetAndroidndkPkgs = targetPackages.androidndkPkgs_21;
     };
+
 }
diff --git a/pkgs/development/mobile/androidenv/compose-android-packages.nix b/pkgs/development/mobile/androidenv/compose-android-packages.nix
index f98547011bde..1786aebae830 100644
--- a/pkgs/development/mobile/androidenv/compose-android-packages.nix
+++ b/pkgs/development/mobile/androidenv/compose-android-packages.nix
@@ -14,7 +14,7 @@
 , lldbVersions ? [ ]
 , cmakeVersions ? [ ]
 , includeNDK ? false
-, ndkVersion ? "18.1.5063045"
+, ndkVersion ? "21.0.6113669"
 , useGoogleAPIs ? false
 , useGoogleTVAddOns ? false
 , includeExtras ? []
diff --git a/pkgs/development/mobile/androidenv/ndk-bundle/default.nix b/pkgs/development/mobile/androidenv/ndk-bundle/default.nix
index b81fab1ed76f..6bdb71815909 100644
--- a/pkgs/development/mobile/androidenv/ndk-bundle/default.nix
+++ b/pkgs/development/mobile/androidenv/ndk-bundle/default.nix
@@ -7,12 +7,14 @@ deployAndroidPackage {
   inherit package os;
   buildInputs = [ autoPatchelfHook makeWrapper pkgs.python2 ]
     ++ lib.optional (os == "linux") [ pkgs.glibc pkgs.stdenv.cc.cc pkgs.ncurses5 pkgs.zlib pkgs.libcxx.out ];
-  patchInstructions = lib.optionalString (os == "linux") ''
+  patchInstructions = lib.optionalString (os == "linux") (''
     patchShebangs .
 
+  '' + lib.optionalString (builtins.compareVersions (lib.getVersion package) "21" > 0) ''
     patch -p1 \
       --no-backup-if-mismatch < ${./make_standalone_toolchain.py_18.patch}
     wrapProgram $(pwd)/build/tools/make_standalone_toolchain.py --prefix PATH : "${runtime_paths}"
+  '' + ''
 
     # TODO: allow this stuff
     rm -rf docs tests
@@ -46,6 +48,6 @@ deployAndroidPackage {
     do
         ln -sf ../libexec/android-sdk/ndk-bundle/$i $out/bin/$i
     done
-  '';
+  '');
   noAuditTmpdir = true; # Audit script gets invoked by the build/ component in the path for the make standalone script
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 933a7544fb77..df2ca9f9d07f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1155,6 +1155,7 @@ in
 
   androidndkPkgs = androidndkPkgs_18b;
   androidndkPkgs_18b = (callPackage ../development/androidndk-pkgs {})."18b";
+  androidndkPkgs_21 = (callPackage ../development/androidndk-pkgs {})."21";
 
   androidsdk_9_0 = androidenv.androidPkgs_9_0.androidsdk;