diff --git a/requirements.txt b/requirements.txt
index f2693f2..842dd47 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pymzml==2.5.1
-openpyxl==3.0.4
+openpyxl==3.1.5
 nose
 tox
 coverage