diff --git a/app/Jobs/ApplicationDeploymentJob.php b/app/Jobs/ApplicationDeploymentJob.php
index 13511957f..f4ec4abda 100644
--- a/app/Jobs/ApplicationDeploymentJob.php
+++ b/app/Jobs/ApplicationDeploymentJob.php
@@ -2454,13 +2454,13 @@ private function build_railpack_image(): void
             $prepare_command .= " {$this->env_railpack_args}";
         }
         if ($this->application->build_command) {
-            $prepare_command .= " --build-cmd \"{$this->application->build_command}\"";
+            $prepare_command .= ' --build-cmd '.escapeShellValue($this->application->build_command);
         }
         if ($this->application->start_command) {
-            $prepare_command .= " --start-cmd \"{$this->application->start_command}\"";
+            $prepare_command .= ' --start-cmd '.escapeShellValue($this->application->start_command);
         }
         if ($this->application->install_command) {
-            $prepare_command .= " --env RAILPACK_INSTALL_CMD=\"{$this->application->install_command}\"";
+            $prepare_command .= ' --env '.escapeShellValue("RAILPACK_INSTALL_CMD={$this->application->install_command}");
         }
 
         $prepare_command .= " --plan-out /artifacts/railpack-plan.json {$this->workdir}";