diff --git a/src/main/java/org/antipathy/mvn_scalafmt/FormatMojo.java b/src/main/java/org/antipathy/mvn_scalafmt/FormatMojo.java
index ac66334..a692dbd 100644
--- a/src/main/java/org/antipathy/mvn_scalafmt/FormatMojo.java
+++ b/src/main/java/org/antipathy/mvn_scalafmt/FormatMojo.java
@@ -16,7 +16,7 @@
 /**
  * Get the location of the config file and pass to Formatter
  */
-@Mojo(name = "format", defaultPhase = LifecyclePhase.VALIDATE)
+@Mojo(name = "format", defaultPhase = LifecyclePhase.VALIDATE, threadSafe = true)
 public class FormatMojo extends AbstractMojo {
 
     @Parameter(property = "format.configLocation")