diff --git a/e2e/MODULE.bazel b/e2e/MODULE.bazel
new file mode 100644
index 000000000..e69de29bb
diff --git a/e2e/cases/MODULE.bazel b/e2e/cases/MODULE.bazel
index fcd99dfac..4ce964105 100644
--- a/e2e/cases/MODULE.bazel
+++ b/e2e/cases/MODULE.bazel
@@ -123,6 +123,7 @@ include("//uv-deps-650:setup.MODULE.bazel")
 include("//uv-data-purelib:setup.MODULE.bazel")
 include("//uv-dup-lock-records:setup.MODULE.bazel")
 include("//uv-duplicate-whl-labels:setup.MODULE.bazel")
+include("//uv-extra-marker:setup.MODULE.bazel")
 include("//uv-git-source:setup.MODULE.bazel")
 include("//uv-include-group:setup.MODULE.bazel")
 include("//uv-incompatible-wheel-source:setup.MODULE.bazel")
diff --git a/e2e/cases/uv-extra-marker/BUILD.bazel b/e2e/cases/uv-extra-marker/BUILD.bazel
new file mode 100644
index 000000000..df3db1a33
--- /dev/null
+++ b/e2e/cases/uv-extra-marker/BUILD.bazel
@@ -0,0 +1,14 @@
+load("@aspect_rules_py//py:defs.bzl", "py_test")
+
+py_test(
+    name = "extra_marker",
+    srcs = [
+        "__test__.py",
+    ],
+    dep_group = "ci",
+    main = "__test__.py",
+    python_version = "3.11",
+    deps = [
+        "@pypi_uv_extra_marker//colorama",
+    ],
+)
diff --git a/e2e/cases/uv-extra-marker/__test__.py b/e2e/cases/uv-extra-marker/__test__.py
new file mode 100644
index 000000000..5244124d6
--- /dev/null
+++ b/e2e/cases/uv-extra-marker/__test__.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+"""Reproduce omitted extra-only markers.
+
+The dev dependency group activates the project's `build` extra, which should
+make `colorama` available. If rules_py evaluates `extra == 'build'` to false
+because the active venv is named `dev`, the dependency is dropped and this
+import fails.
+"""
+
+import colorama
+
+print(f"colorama: {colorama.__file__}")
diff --git a/e2e/cases/uv-extra-marker/pyproject.toml b/e2e/cases/uv-extra-marker/pyproject.toml
new file mode 100644
index 000000000..1702531c6
--- /dev/null
+++ b/e2e/cases/uv-extra-marker/pyproject.toml
@@ -0,0 +1,15 @@
+[project]
+name = "extra-marker"
+version = "0.0.0"
+requires-python = ">=3.11"
+dependencies = []
+
+[project.optional-dependencies]
+build = [
+    "colorama",
+]
+
+[dependency-groups]
+ci = [
+    "extra-marker[build]",
+]
diff --git a/e2e/cases/uv-extra-marker/setup.MODULE.bazel b/e2e/cases/uv-extra-marker/setup.MODULE.bazel
new file mode 100644
index 000000000..9168008ce
--- /dev/null
+++ b/e2e/cases/uv-extra-marker/setup.MODULE.bazel
@@ -0,0 +1,8 @@
+uv = use_extension("@aspect_rules_py//uv:extensions.bzl", "uv")
+uv.declare_hub(hub_name = "pypi_uv_extra_marker")
+uv.project(
+    hub_name = "pypi_uv_extra_marker",
+    lock = "//uv-extra-marker:uv.lock",
+    pyproject = "//uv-extra-marker:pyproject.toml",
+)
+use_repo(uv, "pypi_uv_extra_marker")
diff --git a/e2e/cases/uv-extra-marker/uv.lock b/e2e/cases/uv-extra-marker/uv.lock
new file mode 100644
index 000000000..8f463cdfb
--- /dev/null
+++ b/e2e/cases/uv-extra-marker/uv.lock
@@ -0,0 +1,34 @@
+version = 1
+revision = 3
+requires-python = ">=3.11"
+
+[[package]]
+name = "colorama"
+version = "0.4.6"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/d8/53/6f443c9a4a8358a93a6792e2acffb9d9d5cb0a5cfd8802644b7b1c9a02e4/colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44", size = 27697, upload-time = "2022-10-25T02:36:22.414Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/d1/d6/3965ed04c63042e047cb6a3e6ed1a63a35087b6a609aa3a15ed8ac56c221/colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6", size = 25335, upload-time = "2022-10-25T02:36:20.889Z" },
+]
+
+[[package]]
+name = "extra-marker"
+version = "0.0.0"
+source = { virtual = "." }
+
+[package.optional-dependencies]
+build = [
+    { name = "colorama", marker = "extra == 'build'" },
+]
+
+[package.dev-dependencies]
+ci = [
+    { name = "extra-marker", extra = ["build"] },
+]
+
+[package.metadata]
+requires-dist = [{ name = "colorama", marker = "extra == 'build'" }]
+provides-extras = ["build"]
+
+[package.metadata.requires-dev]
+ci = [{ name = "extra-marker", extras = ["build"] }]