diff --git a/system/src/Grav/Common/GPM/Installer.php b/system/src/Grav/Common/GPM/Installer.php
index dc2d563c2..36cce7867 100644
--- a/system/src/Grav/Common/GPM/Installer.php
+++ b/system/src/Grav/Common/GPM/Installer.php
@@ -150,10 +150,8 @@ class Installer
                         }
                     }
                 } else {
-                    if (is_file($path)) {
-                        @unlink($path);
-                        @copy($tmp . DS . $filename, $path);
-                    }
+                    @unlink($path);
+                    @copy($tmp . DS . $filename, $path);
                 }
             }
         }
diff --git a/system/src/Grav/Console/ConsoleTrait.php b/system/src/Grav/Console/ConsoleTrait.php
index 1067331ee..7770ecbbd 100644
--- a/system/src/Grav/Console/ConsoleTrait.php
+++ b/system/src/Grav/Console/ConsoleTrait.php
@@ -64,10 +64,14 @@ trait ConsoleTrait
         }
     }
 
-    public function clearCache()
+    public function clearCache($all = [])
     {
+        if ($all) {
+            $all = ['--all' => true];
+        }
+
         $command = new ClearCacheCommand();
-        $input = new ArrayInput(array('--all' => true));
+        $input = new ArrayInput($all);
         return $command->run($input, $this->output);
     }
 }
diff --git a/system/src/Grav/Console/Gpm/InstallCommand.php b/system/src/Grav/Console/Gpm/InstallCommand.php
index 6c5a124fa..aacfd3c86 100644
--- a/system/src/Grav/Console/Gpm/InstallCommand.php
+++ b/system/src/Grav/Console/Gpm/InstallCommand.php
@@ -114,6 +114,9 @@ class InstallCommand extends Command
                 }
             }
         }
+
+        // clear cache after successful upgrade
+        $this->clearCache();
     }
 
     private function downloadPackage($package)
diff --git a/system/src/Grav/Console/Gpm/SelfupgradeCommand.php b/system/src/Grav/Console/Gpm/SelfupgradeCommand.php
index 3cb0f423b..455eea9b9 100644
--- a/system/src/Grav/Console/Gpm/SelfupgradeCommand.php
+++ b/system/src/Grav/Console/Gpm/SelfupgradeCommand.php
@@ -7,7 +7,6 @@ use Grav\Common\GPM\Installer;
 use Grav\Common\GPM\Response;
 use Grav\Console\ConsoleTrait;
 use Symfony\Component\Console\Command\Command;
-use Symfony\Component\Console\Input\ArrayInput;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -117,7 +116,7 @@ class SelfupgradeCommand extends Command
         }
 
         // clear cache after successful upgrade
-        $this->clearCache();
+        $this->clearCache(true);
     }
 
     private function download($package)
diff --git a/system/src/Grav/Console/Gpm/UpdateCommand.php b/system/src/Grav/Console/Gpm/UpdateCommand.php
index 87c91c36e..451a3e79a 100644
--- a/system/src/Grav/Console/Gpm/UpdateCommand.php
+++ b/system/src/Grav/Console/Gpm/UpdateCommand.php
@@ -128,6 +128,9 @@ class UpdateCommand extends Command
             $this->output->writeln("<red>Error:</red> An error occured while trying to install the extensions");
             exit;
         }
+
+        // clear cache after successful upgrade
+        $this->clearCache();
     }
 
     private function userInputPackages($onlyPackages)