diff --git a/.github/templates/formula.rb.template b/.github/templates/formula.rb.template
index 6418489..e5df6b3 100644
--- a/.github/templates/formula.rb.template
+++ b/.github/templates/formula.rb.template
@@ -22,6 +22,9 @@ class {{CLASS_NAME}} < Formula
     
     # Install the package and all dependencies
     system libexec/"bin/pip", "install", "--upgrade", "pip"
+    # Set version for setuptools-scm since archive tarballs lack .git metadata
+    # Skip for HEAD builds — they use git clone, so setuptools-scm reads tags directly
+    ENV["SETUPTOOLS_SCM_PRETEND_VERSION"] = version.to_s unless build.head?
     system libexec/"bin/pip", "install", buildpath.to_s
     
     # Create wrapper scripts in bin that use the venv