diff --git a/docs/conf.py b/docs/conf.py
index b57637c..a6fdad9 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -48,7 +48,7 @@
 # The short X.Y version
 version = '0.12'
 # The full version, including alpha/beta/rc tags
-release = '0.12.3'
+release = '0.12.4'
 
 # -- General configuration ---------------------------------------------------
 
diff --git a/neptunecontrib/monitoring/metrics.py b/neptunecontrib/monitoring/metrics.py
index 577b1c0..27afbef 100644
--- a/neptunecontrib/monitoring/metrics.py
+++ b/neptunecontrib/monitoring/metrics.py
@@ -694,9 +694,13 @@ def expand_prediction(prediction):
 
 
 def _plot_confusion_matrix(y_true, y_pred_class, ax=None):
+    if not ax:
+        _, ax = plt.subplots()
     cmap = plt.get_cmap('Blues')
     cm = sk_metrics.confusion_matrix(y_true, y_pred_class)
     sns.heatmap(cm, cmap=cmap, annot=True, fmt='g', ax=ax)
+    ax.set_xlabel('predicted values')
+    ax.set_ylabel('actual values')
 
 
 def _plot_class_metrics_by_threshold(y_true, y_pred_positive):
@@ -714,6 +718,8 @@ def _plot_class_metrics_by_threshold(y_true, y_pred_positive):
             ax.text(x=best_thres + 0.01, y=0.98 * best_score,
                     s='thres={:.4f}\nscore={:.4f}'.format(best_thres, best_score),
                     color='red')
+            ax.set_xlabel('threshold')
+            ax.set_ylabel(name)
             figs.append(fig)
     return figs
 
diff --git a/setup.py b/setup.py
index 17ebbe0..0ab3e97 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ def main():
 
     setup(
         name='neptune-contrib',
-        version='0.12.3',
+        version='0.12.4',
         description='Neptune Python library contributions',
         author='neptune.ml',
         author_email='contact@neptune.ml',