diff --git a/pyproject.toml b/pyproject.toml
index a4a4713..6390bce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,8 +19,9 @@ classifiers = [
 dependencies = [
     "numpy",
     "pandas",
-    "seaborn",
-    "statannotations",
+    "seaborn"="0.11.2",
+    "matplotlib"="3.8.4"
+    "statannotations=0.6.0",
     "scipy"
 ]
 
diff --git a/swarm_visualizer/utility/statistics_utils.py b/swarm_visualizer/utility/statistics_utils.py
index cb9f772..9d7fa5a 100644
--- a/swarm_visualizer/utility/statistics_utils.py
+++ b/swarm_visualizer/utility/statistics_utils.py
@@ -10,13 +10,17 @@ def add_wilcoxon_value(
     hue=None,
     order_list=None,
     box_pairs=None,
-    test_type=None,
-    text_format=None,
+    test_type="Wilcoxon",
+    text_format="full",
     loc=None,
     fontsize=20,
     verbose=0,
+    pvalue_format_string="{:.4f}",
+    show_test_name=False,
+    **kwargs
 ) -> None:
     
     annotator = Annotator(ax,box_pairs,data=df, x=x_var, y=y_var, hue = hue, order=order_list)
-    annotator.configure(test=test_type, text_format=text_format, loc=loc, verbose=verbose, fontsize=fontsize)
+    annotator.configure(test=test_type, text_format=text_format, loc=loc, verbose=verbose, fontsize=fontsize, 
+                        pvalue_format_string=pvalue_format_string, show_test_name=show_test_name, **kwargs)
     annotator.apply_and_annotate()
diff --git a/tests/test_p_value.py b/tests/test_p_value.py
index 61ccf65..acbf166 100644
--- a/tests/test_p_value.py
+++ b/tests/test_p_value.py
@@ -8,8 +8,7 @@
 import pytest
 
 from swarm_visualizer import plot_grouped_boxplot, plot_paired_boxplot
-from swarm_visualizer.utility import save_fig, set_plot_properties
-from swarm_visualizer.utility import add_wilcoxon_value
+from swarm_visualizer.utility import save_fig, set_plot_properties, add_wilcoxon_value
 
 # Example Plots location
 _X1_DATA = np.arange(0, 5, 0.05) + np.random.normal(0, 0.1, 100)