diff --git a/cli/Valet/Site.php b/cli/Valet/Site.php
index 8f75c6f..73cc0bf 100644
--- a/cli/Valet/Site.php
+++ b/cli/Valet/Site.php
@@ -511,6 +511,27 @@ public function createCa(int $caExpireInDays): void
         $this->trustCa($caPemPath);
     }
 
+    /**
+     * If CA and root certificates exist, remove them.
+     */
+    public function removeCa(): void
+    {
+        foreach (['pem', 'key', 'srl'] as $ending) {
+            $path = $this->caPath('LaravelValetCASelfSigned.' . $ending);
+
+            if ($this->files->exists($path)) {
+                $this->files->unlink($path);
+            }
+        }
+
+        $cName = 'Laravel Valet CA Self Signed CN';
+
+        $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 a7f9882..7bd4889 100644
--- a/cli/app.php
+++ b/cli/app.php
@@ -512,6 +512,8 @@ 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...');
diff --git a/tests/CliTest.php b/tests/CliTest.php
index aa22606..a509153 100644
--- a/tests/CliTest.php
+++ b/tests/CliTest.php
@@ -778,6 +778,7 @@ public function test_force_uninstall_command()
 
         $site = Mockery::mock(RealSite::class);
         $site->shouldReceive('unsecureAll')->once();
+        $site->shouldReceive('removeCa')->once();
         $site->shouldReceive('uninstallLoopback')->once();
 
         $nginx = Mockery::mock(Nginx::class);