diff --git a/requirements.txt b/requirements.txt
index db768e8..6a45509 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ pluggy==0.7.1             # via pytest
 prettytable==7        # via mootdx
 py==1.6.0                 # via pytest
 pycparser==2.19           # via cffi
-pyparsing==2.2.1          # via matplotlib
+pyparsing==2.4.5          # via matplotlib
 pytdx==1.67               # via mootdx
 pytest==3.8.1
 python-dateutil==2.7.3    # via matplotlib, pandas