diff --git a/cli/Valet/Site.php b/cli/Valet/Site.php
index 6240836..75d526b 100644
--- a/cli/Valet/Site.php
+++ b/cli/Valet/Site.php
@@ -588,6 +588,35 @@ public function createCa($caExpireInDays)
         $this->trustCa($caPemPath);
     }
 
+    /**
+     * If CA and root certificates exist, remove them.
+     *
+     * @return void
+     */
+    public function removeCa()
+    {
+        $caPemPath = $this->caPath('LaravelValetCASelfSigned.pem');
+        $caKeyPath = $this->caPath('LaravelValetCASelfSigned.key');
+        $caSrlPath = $this->caPath('LaravelValetCASelfSigned.srl');
+
+        $cName = 'Laravel Valet CA Self Signed CN';
+
+        if ($this->files->exists($caKeyPath)) {
+            $this->files->unlink($caKeyPath);
+        }
+        if ($this->files->exists($caPemPath)) {
+            $this->files->unlink($caPemPath);
+        }
+        if ($this->files->exists($caSrlPath)) {
+            $this->files->unlink($caSrlPath);
+        }
+
+        $this->cli->run(sprintf(
+            'sudo security delete-certificate -c "%s" /Library/Keychains/System.keychain',
+            $cName
+        ));
+    }
+
     /**
      * Create and trust a certificate for the given URL.
      *
diff --git a/cli/app.php b/cli/app.php
index 25078d2..4010044 100644
--- a/cli/app.php
+++ b/cli/app.php
@@ -420,6 +420,8 @@ function (ConsoleCommandEvent $event) {
             }
             info('Removing certificates for all Secured sites...');
             Site::unsecureAll();
+            info('Removing certificate authority...');
+            Site::removeCa();
             info('Removing Nginx and configs...');
             Nginx::uninstall();
             info('Removing Dnsmasq and configs...');