diff --git a/evalml/tests/component_tests/decomposer_tests/test_polynomial_decomposer.py b/evalml/tests/component_tests/decomposer_tests/test_polynomial_decomposer.py
index a8fc871ed7..61819b034f 100644
--- a/evalml/tests/component_tests/decomposer_tests/test_polynomial_decomposer.py
+++ b/evalml/tests/component_tests/decomposer_tests/test_polynomial_decomposer.py
@@ -96,7 +96,11 @@ def test_polynomial_decomposer_needs_monotonic_index(ts_data):
     with pytest.raises(Exception) as exec_info:
         y_shuffled = y.sample(frac=1, replace=False)
         decomposer.fit_transform(X, y_shuffled)
-    expected_errors = ["monotonically", "X must be in an sktime compatible format"]
+    expected_errors = [
+        "monotonically",
+        "X must be in an sktime compatible format",
+        "'NoneType' object is not subscriptable",
+    ]
     assert any([error in str(exec_info.value) for error in expected_errors])
 
 
diff --git a/evalml/tests/dependency_update_check/latest_dependency_versions.txt b/evalml/tests/dependency_update_check/latest_dependency_versions.txt
index 7ceb8bd1a9..88d8af7b51 100644
--- a/evalml/tests/dependency_update_check/latest_dependency_versions.txt
+++ b/evalml/tests/dependency_update_check/latest_dependency_versions.txt
@@ -1,4 +1,4 @@
-black==23.12.0
+black==23.12.1
 catboost==1.2.2
 category-encoders==2.5.1.post0
 click==8.1.7
@@ -12,7 +12,7 @@ holidays==0.20
 imbalanced-learn==0.11.0
 ipywidgets==8.1.1
 kaleido==0.1.0
-lightgbm==4.1.0
+lightgbm==4.2.0
 lime==0.2.0.1
 matplotlib==3.7.4
 matplotlib-inline==0.1.6
@@ -29,7 +29,7 @@ scikit-optimize==0.9.0
 scipy==1.10.1
 seaborn==0.13.0
 shap==0.44.0
-sktime==0.24.1
+sktime==0.25.0
 statsmodels==0.14.1
 texttable==1.7.0
 tomli==2.0.1