diff --git a/main.tf b/main.tf
index d7547c5..9692b35 100644
--- a/main.tf
+++ b/main.tf
@@ -8,7 +8,7 @@
 
 resource "aws_key_pair" "auth" {
   key_name   = coalesce(var.key_name, module.airflow_labels.id)
-  public_key = var.public_key
+  public_key = coalesce(var.public_key, file(var.public_key_path))
 }
 
 # -------------------------------------------