diff --git a/docs/user-guide/features.md b/docs/user-guide/features.md
index d5c2160..7d7cd79 100644
--- a/docs/user-guide/features.md
+++ b/docs/user-guide/features.md
@@ -87,11 +87,9 @@ raise `ValueError` before feature execution.
 ### Calendar and bar grid
 
 The calendar-aware default targets the next minor version (0.2), separate from the 0.1.7 patch.
-Development and qualification currently pin the merged Specs v2 implementation at
-`701bde68744035050ede386efce498234c661c21`. The same immutable Git dependency is declared
-in built package metadata; published Specs 0.1.5 does not provide this API. Before a PyPI
-release, replace that source dependency with the verified published Specs version containing
-the v2 contract and repeat installed-package qualification.
+The shared temporal contract requires published `ml4t-specs>=0.2.0,<0.3.0`, also declared
+in built package metadata. Specs 0.1.5 does not provide this API. Engineer's development
+branch uses the published dependency; the temporal migration is not part of the 0.1.7 patch.
 
 Calendar selection
 uses the explicit `calendar` argument, then declared feed metadata, then NYSE. Explicit
diff --git a/pyproject.toml b/pyproject.toml
index 0dd9f84..93321da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,10 +8,6 @@ build-backend = "hatchling.build"
 [tool.hatch.version]
 source = "vcs"
 
-[tool.hatch.metadata]
-# Qualification pin until the shared time-contract v2 API is published on PyPI.
-allow-direct-references = true
-
 [tool.hatch.build.targets.wheel]
 packages = ["src/ml4t"]
 namespaces = true
@@ -76,7 +72,7 @@ requires-python = ">=3.12,<3.15"
 
 # Core dependencies
 dependencies = [
-    "ml4t-specs @ git+https://github.com/ml4t/specs.git@701bde68744035050ede386efce498234c661c21",
+    "ml4t-specs>=0.2.0,<0.3.0",
 
     # Data processing (Polars-first)
     "polars>=0.20.0",
diff --git a/tests/test_release_policy.py b/tests/test_release_policy.py
index 07db42a..87afb2b 100644
--- a/tests/test_release_policy.py
+++ b/tests/test_release_policy.py
@@ -242,7 +242,7 @@ def test_ci_audits_core_and_complete_locked_environments() -> None:
     assert "complete.txt" in audit
 
 
-def test_core_dependency_uses_bounded_specs_or_immutable_source_for_qualification() -> None:
+def test_core_dependency_requires_published_time_contract_v2() -> None:
     project = tomllib.loads((ROOT / "pyproject.toml").read_text(encoding="utf-8"))
     lock = tomllib.loads((ROOT / "uv.lock").read_text(encoding="utf-8"))
 
@@ -252,17 +252,10 @@ def test_core_dependency_uses_bounded_specs_or_immutable_source_for_qualificatio
         if Requirement(value).name == "ml4t-specs"
     )
     specs = next(package for package in lock["package"] if package["name"] == "ml4t-specs")
-    if requirement.url is None:
-        assert str(requirement.specifier) == "<0.2.0,>=0.1.0"
-        assert specs["version"] in requirement.specifier
-    else:
-        assert re.fullmatch(
-            r"git\+https://github.com/ml4t/specs\.git@[0-9a-f]{40}", requirement.url
-        )
-        commit = requirement.url.rsplit("@", maxsplit=1)[1]
-        assert specs["source"] == {
-            "git": f"https://github.com/ml4t/specs.git?rev={commit}#{commit}"
-        }
+    assert requirement.url is None
+    assert str(requirement.specifier) == "<0.3.0,>=0.2.0"
+    assert specs["version"] in requirement.specifier
+    assert specs["source"] == {"registry": "https://pypi.org/simple"}
 
 
 def test_package_supports_python_312_through_314() -> None:
diff --git a/uv.lock b/uv.lock
index af62738..c5c6d49 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1651,7 +1651,7 @@ requires-dist = [
     { name = "mkdocs-material", marker = "extra == 'docs'", specifier = ">=9.5.0" },
     { name = "mkdocstrings", extras = ["python"], marker = "extra == 'all'", specifier = ">=0.24.0" },
     { name = "mkdocstrings", extras = ["python"], marker = "extra == 'docs'", specifier = ">=0.24.0" },
-    { name = "ml4t-specs", git = "https://github.com/ml4t/specs.git?rev=701bde68744035050ede386efce498234c661c21" },
+    { name = "ml4t-specs", specifier = ">=0.2.0,<0.3.0" },
     { name = "numba", specifier = ">=0.57.0" },
     { name = "numpy", specifier = ">=1.24.0,<2.6" },
     { name = "pandas", specifier = ">=2.0.0" },
@@ -1728,11 +1728,15 @@ test = [
 
 [[package]]
 name = "ml4t-specs"
-version = "0.1.5"
-source = { git = "https://github.com/ml4t/specs.git?rev=701bde68744035050ede386efce498234c661c21#701bde68744035050ede386efce498234c661c21" }
+version = "0.2.0"
+source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "pyyaml" },
 ]
+sdist = { url = "https://files.pythonhosted.org/packages/2e/46/c734e5bcac1f214c83423243023b5d313bccabd25563da4e7d5e6b80f9f4/ml4t_specs-0.2.0.tar.gz", hash = "sha256:e5d5d614f71d14223341f992009d0d0bf14f30a8398c50872d2b3fb80fd33d82", size = 59749, upload-time = "2026-10-17T18:21:32.512Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/66/ff/bfc427bb71635f31cb240330aa2b1b486748999f05a5922ee5f58df721fe/ml4t_specs-0.2.0-py3-none-any.whl", hash = "sha256:cfd550d19b469f1b083d6ac3f83b235fe71aee19c28465f2ac2c8620064bae61", size = 36946, upload-time = "2026-10-17T18:21:30.964Z" },
+]
 
 [[package]]
 name = "more-itertools"