diff --git a/.readthedocs.yml b/.readthedocs.yml
index a8b4b07..768404a 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -9,7 +9,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3"
+    python: "3.11"
 
 # Build documentation in the "docs/" directory with Sphinx
 sphinx:
diff --git a/microvenv/__main__.py b/microvenv/__main__.py
index ae642ea..faa0527 100644
--- a/microvenv/__main__.py
+++ b/microvenv/__main__.py
@@ -1,3 +1,9 @@
+import sys
+
+if sys.platform == "win32":
+    print("Microvenv's CLI is not supported on Windows", file=sys.stderr)
+    sys.exit(1)
+
 from ._create import main
 
 if __name__ == "__main__":
diff --git a/pyproject.toml b/pyproject.toml
index ae989a9..d87f641 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "microvenv"
-version = "2023.3.post1"
+version = "2023.4"
 description = "A minimal re-implementation of Python's venv module plus utilities"
 keywords = ["virtual environments", "venv"]
 readme = "README.md"