diff --git a/arch/unitroot/_phillips_ouliaris.py b/arch/unitroot/_phillips_ouliaris.py
index bc6cd305ab..775ab1a406 100644
--- a/arch/unitroot/_phillips_ouliaris.py
+++ b/arch/unitroot/_phillips_ouliaris.py
@@ -175,9 +175,7 @@ def phillips_ouliaris(
         and "quadratic-spectral" for the Quadratic Spectral kernel.
     bandwidth : int, default None
         The bandwidth to use. If not provided, the optimal bandwidth is
-        estimated from the data. Setting the bandwidth to 0 and using
-        "unadjusted" produces the classic OLS covariance estimator.
-        Setting the bandwidth to 0 and using "robust" produces White's
+        estimated from the data. Setting the bandwidth to 0 produces White's
         covariance estimator.
     force_int : bool, default False
         Whether the force the estimated optimal bandwidth to be an integer.
@@ -198,14 +196,6 @@ def phillips_ouliaris(
 
     Notes
     -----
-
-    .. warning::
-
-       The critical value simulation is on-going and so the critical values
-       may change slightly as more simulations are completed. These are still
-       based on far more simulations (minimum 2,000,000) than were possible
-       in 1990 (5000) that are reported in [1]_.
-
     Supports 4 distinct tests.
 
     Define the cross-sectional regression
@@ -276,7 +266,7 @@ def phillips_ouliaris(
     differs from the expression in [1]_. We recenter :math:`z_t` by subtracting
     the first observation, so that :math:`\tilde{z}_t = z_t - z_1`. This is
     needed to ensure that the initial value does not affect the distribution
-    under the null. When the trend is anything other than "n", this set is not
+    under the null. When the trend is anything other than "n", this step is not
     needed and the test statistics is identical whether the first observation
     is subtracted or not.
 
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 9701a78ad3..bb812cbc5b 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -127,7 +127,6 @@
     "site_url": "https://bashtage.github.io/arch/",
     "repo_url": "https://github.com/bashtage/arch/",
     "repo_name": "arch",
-    "repo_type": "github",
     "palette": {"primary": "blue", "accent": "indigo"},
     "globaltoc_collapse": True,
     "toc_title": "Contents",