diff --git a/README.md b/README.md
index d2cf6bc..c5e32d3 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ sh -ic "$(curl -sS https://raw.githubusercontent.com/extdn/installer-m2/master/b
 ```
 
 ### Option 2 - Phar
-Download and save the [ExtDN_Installer](https://github.com/extdn/installer-m2/raw/v1.0.0-rc7/build/extdn_installer.phar). Ensure it is executable with `chmod +x extdn_installer.phar`.
+Download and save the [ExtDN_Installer](https://github.com/extdn/installer-m2/raw/v1.0.0-rc8/build/extdn_installer.phar). Ensure it is executable with `chmod +x extdn_installer.phar`.
 
 #### Phar Installation from packagist or Marketplace 
 (essentially all previously pre-configured composer repositories)
diff --git a/VERSION b/VERSION
index 97870c5..8450ae5 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.0-rc7
\ No newline at end of file
+1.0.0-rc8
\ No newline at end of file
diff --git a/bin/oneliner.sh b/bin/oneliner.sh
index 09cfde3..ae08574 100755
--- a/bin/oneliner.sh
+++ b/bin/oneliner.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-curl -sSL https://github.com/extdn/installer-m2/raw/v1.0.0-rc7/build/extdn_installer.phar -o extdn_installer.phar
+curl -sSL https://github.com/extdn/installer-m2/raw/v1.0.0-rc8/build/extdn_installer.phar -o extdn_installer.phar
 chmod +x extdn_installer.phar
 ./extdn_installer.phar $@
 RET_VALUE=$?
diff --git a/build/extdn_installer.phar b/build/extdn_installer.phar
index 50b12ea..352b88c 100755
Binary files a/build/extdn_installer.phar and b/build/extdn_installer.phar differ
diff --git a/src/Command/Installer.php b/src/Command/Installer.php
index 111d850..f100afd 100644
--- a/src/Command/Installer.php
+++ b/src/Command/Installer.php
@@ -45,6 +45,11 @@ public function install(
         try {
             $this->say('Running ExtDN Installer ');
 
+            if ($this->getOption('simulate')) {
+                $this->exitWithError(
+                    'Simulated installs are currently not supported.'
+                );
+            }
             # TODO maybe use a collection instead to run multiple tasks chained together
             # check correct directory
             $this->taskCheckMagentoRoot()->run();