diff --git a/manifest.toml b/manifest.toml
index 532e64e..316a36f 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -47,6 +47,7 @@ ram.runtime = "50M"
       [resources.sources.main]
         url = "https://codeload.github.com/terraforming-mars/terraforming-mars/tar.gz/78e5e5d0433e4d1632639ea7da1a1993672bd82a"
         sha256 = "ad4e3107b42d61aac93546887f01714f6ef2d0ed84fb6f7c6f8178bf60264e1f"
+        in_subdir = true
         autoupdate.strategy = "latest_github_tag"
    
     [resources.system_user]