diff --git a/pyproject.toml b/pyproject.toml
index 81d80da..dd4e69a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "challenge-toolkit"
-version = "2.0.0"
+version = "2.0.1rc1"
 description = "CTF Pilot's Challenge Toolkit"
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/src/challenge_toolkit/commands/template_renderer.py b/src/challenge_toolkit/commands/template_renderer.py
index a4e959d..397ff5b 100644
--- a/src/challenge_toolkit/commands/template_renderer.py
+++ b/src/challenge_toolkit/commands/template_renderer.py
@@ -60,6 +60,10 @@ def parse(self):
         if not self.repo or self.repo.strip() == "":
             print("GitHub repository is required. Please provide it via the --repo argument or the GITHUB_REPOSITORY environment variable.")
             sys.exit(1)
+            
+        # Ensure lowercase repo, as it is used within container image templating
+        # Github repository names are case-insensitive, but Docker image names are case-sensitive and must be lowercase.
+        self.repo = self.repo.lower()
 
     def __getattr__(self, name):
         return getattr(self.args, name)
diff --git a/uv.lock b/uv.lock
index 45409ba..dcca0c7 100644
--- a/uv.lock
+++ b/uv.lock
@@ -4,7 +4,7 @@ requires-python = ">=3.10"
 
 [[package]]
 name = "challenge-toolkit"
-version = "2.0.0"
+version = "2.0.1rc1"
 source = { editable = "." }
 dependencies = [
     { name = "python-slugify" },
@@ -39,7 +39,7 @@ name = "exceptiongroup"
 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+    { name = "typing-extensions" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/50/79/66800aadf48771f6b62f7eb014e352e5d06856655206165d775e675a02c9/exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219", size = 30371, upload-time = "2025-11-21T23:01:54.787Z" }
 wheels = [