diff --git a/isort/_version.py b/isort/_version.py
index 4a8ec67f..40f305bd 100644
--- a/isort/_version.py
+++ b/isort/_version.py
@@ -1,3 +1,7 @@
 from importlib import metadata
 
-__version__ = metadata.version("isort")
+try:
+    __version__ = metadata.version("isort")
+except metadata.PackageNotFoundError:
+    # Case where isort package metadata is not available.
+    __version__ = ""