diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 5833f838..e90ab2ba 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -13,7 +13,7 @@ jobs:
     timeout-minutes: 10
     strategy:
       matrix:
-        api-level: [21, 23, 29]
+        api-level: [16, 21, 23, 29]
     steps:
     - name: checkout
       uses: actions/checkout@v2
@@ -37,7 +37,7 @@ jobs:
       uses: ./
       with:
         api-level: ${{ matrix.api-level }}
-        target: google_apis
+        target: default
         arch: x86
         profile: Nexus 6
         emulator-options: -no-window -gpu swiftshader_indirect -no-snapshot -noaudio -no-boot-anim -camera-back none
diff --git a/README.md b/README.md
index 019dc768..7dcf0a39 100644
--- a/README.md
+++ b/README.md
@@ -69,9 +69,9 @@ jobs:
 
 |  | **Required** | **Default** | **Description** |
 |----------------------|--------------|-------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| `api-level` | Required | N/A | API level of the platform system image - e.g. 23 for Android Marshmallow, 29 for Android 10. **Minimum API level supported is 21**. |
+| `api-level` | Required | N/A | API level of the platform system image - e.g. 23 for Android Marshmallow, 29 for Android 10. **Minimum API level supported is 15**. |
 | `target` | Optional | `default` | Target of the system image - `default` or `google_apis`. |
-| `arch` | Optional | `x86` | CPU architecture of the system image - `x86` or `x86_64`. |
+| `arch` | Optional | `x86` | CPU architecture of the system image - `x86` or `x86_64`. Note that `x86_64` image is only available for API 21+. |
 | `profile` | Optional | N/A | Hardware profile used for creating the AVD - e.g. `Nexus 6`. For a list of all profiles available, run `$ANDROID_HOME/tools/bin/avdmanager list` and refer to the results under "Available Android Virtual Devices". |
 | `emulator-options` | Optional | See below | Command-line options used when launching the emulator (replacing all default options) - e.g. `-no-window -no-snapshot -camera-back emulated`. |
 | `disable-animations` | Optional | `true` | Whether to disable animations - `true` or `false`. |
diff --git a/__tests__/input-validator.test.ts b/__tests__/input-validator.test.ts
index baffc0f2..812177ed 100644
--- a/__tests__/input-validator.test.ts
+++ b/__tests__/input-validator.test.ts
@@ -17,14 +17,14 @@ describe('api-level validator tests', () => {
 
   it('Throws if api-level is lower than min API supported', () => {
     const func = () => {
-      validator.checkApiLevel('20');
+      validator.checkApiLevel('14');
     };
     expect(func).toThrowError(`Minimum API level supported is ${validator.MIN_API_LEVEL}.`);
   });
 
   it('Validates successfully with valid api-level', () => {
     const func1 = () => {
-      validator.checkApiLevel('21');
+      validator.checkApiLevel('15');
     };
     expect(func1).not.toThrow();
 
diff --git a/lib/input-validator.js b/lib/input-validator.js
index 32a59bd4..65fcaa0d 100644
--- a/lib/input-validator.js
+++ b/lib/input-validator.js
@@ -1,6 +1,6 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.MIN_API_LEVEL = 21;
+exports.MIN_API_LEVEL = 15;
 exports.VALID_TARGETS = ['default', 'google_apis'];
 exports.VALID_ARCHS = ['x86', 'x86_64'];
 function checkApiLevel(apiLevel) {
diff --git a/src/input-validator.ts b/src/input-validator.ts
index 176f7b75..b125ebe6 100644
--- a/src/input-validator.ts
+++ b/src/input-validator.ts
@@ -1,4 +1,4 @@
-export const MIN_API_LEVEL = 21;
+export const MIN_API_LEVEL = 15;
 export const VALID_TARGETS: Array<string> = ['default', 'google_apis'];
 export const VALID_ARCHS: Array<string> = ['x86', 'x86_64'];