diff --git a/dist/index.js b/dist/index.js
index 6003d75d..68bebe16 100644
Binary files a/dist/index.js and b/dist/index.js differ
diff --git a/dist/index.js.map b/dist/index.js.map
index 560e37b1..78d6280c 100644
Binary files a/dist/index.js.map and b/dist/index.js.map differ
diff --git a/dist/platforms/ubuntu/steps/activate.sh b/dist/platforms/ubuntu/steps/activate.sh
index 81eb2ffc..49ecc376 100755
--- a/dist/platforms/ubuntu/steps/activate.sh
+++ b/dist/platforms/ubuntu/steps/activate.sh
@@ -4,64 +4,13 @@
 echo "Changing to \"$ACTIVATE_LICENSE_PATH\" directory."
 pushd "$ACTIVATE_LICENSE_PATH"
 
-if [[ -n "$UNITY_LICENSE" ]] || [[ -n "$UNITY_LICENSE_FILE" ]]; then
+if [[ -n "$UNITY_SERIAL" && -n "$UNITY_EMAIL" && -n "$UNITY_PASSWORD" ]]; then
   #
-  # PERSONAL LICENSE MODE
-  #
-  # This will activate Unity, using a license file
-  #
-  # Note that this is the ONLY WAY for PERSONAL LICENSES in 2020.
-  #   * See for more details: https://gitlab.com/gableroux/unity3d-gitlab-ci-example/issues/5#note_72815478
-  #
-  # The license file can be acquired using `webbertakken/request-manual-activation-file` action.
-  echo "Requesting activation (personal license)"
-
-  # Set the license file path
-  FILE_PATH=UnityLicenseFile.ulf
-
-  if [[ -n "$UNITY_LICENSE" ]]; then
-    # Copy license file from Github variables
-    echo "$UNITY_LICENSE" | tr -d '\r' > $FILE_PATH
-  elif [[ -n "$UNITY_LICENSE_FILE" ]]; then
-    # Copy license file from file system
-    cat "$UNITY_LICENSE_FILE" | tr -d '\r' > $FILE_PATH
-  fi
-
-  # Activate license
-  ACTIVATION_OUTPUT=$(unity-editor \
-      -logFile /dev/stdout \
-      -quit \
-      -manualLicenseFile $FILE_PATH)
-
-  # Store the exit code from the verify command
-  UNITY_EXIT_CODE=$?
-
-  # The exit code for personal activation is always 1;
-  # Determine whether activation was successful.
-  #
-  # Successful output should include the following:
-  #
-  #   "LICENSE SYSTEM [2020120 18:51:20] Next license update check is after 2019-11-25T18:23:38"
-  #
-  ACTIVATION_SUCCESSFUL=$(echo $ACTIVATION_OUTPUT | grep 'Next license update check is after' | wc -l)
-
-  # Set exit code to 0 if activation was successful
-  if [[ $ACTIVATION_SUCCESSFUL -eq 1 ]]; then
-    UNITY_EXIT_CODE=0
-  fi;
-
-  # Remove license file
-  rm -f $FILE_PATH
-
-elif [[ -n "$UNITY_SERIAL" && -n "$UNITY_EMAIL" && -n "$UNITY_PASSWORD" ]]; then
-  #
-  # PROFESSIONAL (SERIAL) LICENSE MODE
+  # SERIAL LICENSE MODE
   #
   # This will activate unity, using the activating process.
   #
-  # Note: This is the preferred way for PROFESSIONAL LICENSES.
-  #
-  echo "Requesting activation (professional license)"
+  echo "Requesting activation"
 
   # Activate license
   unity-editor \
diff --git a/dist/platforms/ubuntu/steps/return_license.sh b/dist/platforms/ubuntu/steps/return_license.sh
index f0f68b58..f2ee12c1 100755
--- a/dist/platforms/ubuntu/steps/return_license.sh
+++ b/dist/platforms/ubuntu/steps/return_license.sh
@@ -13,7 +13,7 @@ if [[ -n "$UNITY_LICENSING_SERVER" ]]; then  #
   /opt/unity/Editor/Data/Resources/Licensing/Client/Unity.Licensing.Client --return-floating "$FLOATING_LICENSE"
 elif [[ -n "$UNITY_SERIAL" ]]; then
   #
-  # PROFESSIONAL (SERIAL) LICENSE MODE
+  # SERIAL LICENSE MODE
   #
   # This will return the license that is currently in use.
   #
diff --git a/src/model/build-parameters.ts b/src/model/build-parameters.ts
index 8c322124..57d649ad 100644
--- a/src/model/build-parameters.ts
+++ b/src/model/build-parameters.ts
@@ -12,6 +12,7 @@ import { Cli } from './cli/cli';
 import GitHub from './github';
 import CloudRunnerOptions from './cloud-runner/options/cloud-runner-options';
 import CloudRunner from './cloud-runner/cloud-runner';
+import * as core from '@actions/core';
 
 class BuildParameters {
   // eslint-disable-next-line no-undef
@@ -127,6 +128,7 @@ class BuildParameters {
           );
         }
         unitySerial = this.getSerialFromLicenseFile(Input.unityLicense);
+        core.setSecret(unitySerial);
       } else {
         unitySerial = Input.unitySerial!;
       }
diff --git a/src/model/docker.ts b/src/model/docker.ts
index aec955bc..cd33f863 100644
--- a/src/model/docker.ts
+++ b/src/model/docker.ts
@@ -62,7 +62,6 @@ class Docker {
             --workdir ${dockerWorkspacePath} \
             --rm \
             ${ImageEnvironmentFactory.getEnvVarString(parameters, additionalVariables)} \
-            --env UNITY_SERIAL \
             --env GITHUB_WORKSPACE=${dockerWorkspacePath} \
             --env GIT_CONFIG_EXTENSIONS \
             ${gitPrivateToken ? `--env GIT_PRIVATE_TOKEN="${gitPrivateToken}"` : ''} \
@@ -93,7 +92,6 @@ class Docker {
     const {
       workspace,
       actionFolder,
-      unitySerial,
       gitPrivateToken,
       dockerWorkspacePath,
       dockerCpuLimit,
@@ -105,7 +103,6 @@ class Docker {
             --workdir c:${dockerWorkspacePath} \
             --rm \
             ${ImageEnvironmentFactory.getEnvVarString(parameters)} \
-            --env UNITY_SERIAL="${unitySerial}" \
             --env GITHUB_WORKSPACE=c:${dockerWorkspacePath} \
             ${gitPrivateToken ? `--env GIT_PRIVATE_TOKEN="${gitPrivateToken}"` : ''} \
             --volume "${workspace}":"c:${dockerWorkspacePath}" \
diff --git a/src/model/image-environment-factory.ts b/src/model/image-environment-factory.ts
index c66697b4..6162b50b 100644
--- a/src/model/image-environment-factory.ts
+++ b/src/model/image-environment-factory.ts
@@ -1,4 +1,3 @@
-import { ReadLicense } from './input-readers/test-license-reader';
 import { DockerParameters, StringKeyValuePair } from './shared-types';
 
 class ImageEnvironmentFactory {
@@ -23,14 +22,18 @@ class ImageEnvironmentFactory {
 
   public static getEnvironmentVariables(parameters: DockerParameters, additionalVariables: StringKeyValuePair[] = []) {
     let environmentVariables: StringKeyValuePair[] = [
-      { name: 'UNITY_LICENSE', value: process.env.UNITY_LICENSE || ReadLicense() },
-      { name: 'UNITY_LICENSE_FILE', value: process.env.UNITY_LICENSE_FILE },
       { name: 'UNITY_EMAIL', value: process.env.UNITY_EMAIL },
       { name: 'UNITY_PASSWORD', value: process.env.UNITY_PASSWORD },
       { name: 'UNITY_SERIAL', value: parameters.unitySerial },
-      { name: 'UNITY_LICENSING_SERVER', value: parameters.unityLicensingServer },
+      {
+        name: 'UNITY_LICENSING_SERVER',
+        value: parameters.unityLicensingServer,
+      },
       { name: 'UNITY_VERSION', value: parameters.editorVersion },
-      { name: 'USYM_UPLOAD_AUTH_TOKEN', value: process.env.USYM_UPLOAD_AUTH_TOKEN },
+      {
+        name: 'USYM_UPLOAD_AUTH_TOKEN',
+        value: process.env.USYM_UPLOAD_AUTH_TOKEN,
+      },
       { name: 'PROJECT_PATH', value: parameters.projectPath },
       { name: 'BUILD_TARGET', value: parameters.targetPlatform },
       { name: 'BUILD_NAME', value: parameters.buildName },
@@ -41,12 +44,21 @@ class ImageEnvironmentFactory {
       { name: 'VERSION', value: parameters.buildVersion },
       { name: 'ANDROID_VERSION_CODE', value: parameters.androidVersionCode },
       { name: 'ANDROID_KEYSTORE_NAME', value: parameters.androidKeystoreName },
-      { name: 'ANDROID_KEYSTORE_BASE64', value: parameters.androidKeystoreBase64 },
+      {
+        name: 'ANDROID_KEYSTORE_BASE64',
+        value: parameters.androidKeystoreBase64,
+      },
       { name: 'ANDROID_KEYSTORE_PASS', value: parameters.androidKeystorePass },
       { name: 'ANDROID_KEYALIAS_NAME', value: parameters.androidKeyaliasName },
       { name: 'ANDROID_KEYALIAS_PASS', value: parameters.androidKeyaliasPass },
-      { name: 'ANDROID_TARGET_SDK_VERSION', value: parameters.androidTargetSdkVersion },
-      { name: 'ANDROID_SDK_MANAGER_PARAMETERS', value: parameters.androidSdkManagerParameters },
+      {
+        name: 'ANDROID_TARGET_SDK_VERSION',
+        value: parameters.androidTargetSdkVersion,
+      },
+      {
+        name: 'ANDROID_SDK_MANAGER_PARAMETERS',
+        value: parameters.androidSdkManagerParameters,
+      },
       { name: 'ANDROID_EXPORT_TYPE', value: parameters.androidExportType },
       { name: 'ANDROID_SYMBOL_TYPE', value: parameters.androidSymbolType },
       { name: 'CUSTOM_PARAMETERS', value: parameters.customParameters },
@@ -86,7 +98,9 @@ class ImageEnvironmentFactory {
         }
       }
     }
-    if (parameters.sshAgent) environmentVariables.push({ name: 'SSH_AUTH_SOCK', value: '/ssh-agent' });
+    if (parameters.sshAgent) {
+      environmentVariables.push({ name: 'SSH_AUTH_SOCK', value: '/ssh-agent' });
+    }
 
     return environmentVariables;
   }