diff --git a/HISTORY.md b/HISTORY.md
index c4d4de78..ce8f97eb 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,9 @@
 # Changelog
 
+# 0.6.5
+* FIX coloring of plot_sampledistribution issue #229
+* ADD nbformat requirement issue #230
+
 # 0.6.4
 * FIX windows installer
 
diff --git a/requirements.txt b/requirements.txt
index 927cc55b..de4ac1e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,4 +22,4 @@ combat==0.3.3
 xlsxwriter==3.1.0
 pyteomics==4.6.0
 openpyxl>=3.0.10
-
+nbformat>=5.0
\ No newline at end of file