diff --git a/requirements.txt b/requirements.txt
index 0feee5f..2a27c5c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ PyQt5==5.15.1
 ete3==3.1.1
 glob2==0.5
 matplotlib==3.2.1
-mpmath==0.19
+mpmath==1.3.0
 numpy==1.17.4
 pyaml==16.12.2
 -e git+https://github.com/sztal/pybdm@4bedea1200998a8978ada1a708b4e1f98aacb2d8#egg=pybdm