diff --git a/.git_archival.txt b/.git_archival.txt
new file mode 100644
index 0000000..8fb235d
--- /dev/null
+++ b/.git_archival.txt
@@ -0,0 +1,4 @@
+node: $Format:%H$
+node-date: $Format:%cI$
+describe-name: $Format:%(describe:tags=true,match=*[0-9]*)$
+ref-names: $Format:%D$
diff --git a/.gitattributes b/.gitattributes
index 208af66..5f2f45f 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,2 @@
+.git_archival.txt export-subst
 /amaranth/vendor/* -linguist-vendored
diff --git a/setup.py b/setup.py
index 56c67e2..d63e3f7 100644
--- a/setup.py
+++ b/setup.py
@@ -4,9 +4,7 @@ from setuptools_scm.git import parse as parse_git
 
 def doc_version():
     git = parse_git(".")
-    if not git:
-        return ""
-    elif git.exact:
+    if git.exact:
         return git.format_with("v{tag}")
     else:
         return "latest"