diff --git a/case_studies/mmt/requirements.txt b/case_studies/mmt/requirements.txt
index fea6967..422b16f 100644
--- a/case_studies/mmt/requirements.txt
+++ b/case_studies/mmt/requirements.txt
@@ -102,7 +102,7 @@ pycups==1.9.73
 pycurl==7.43.0
 Pygments==2.3.1
 pygobject==3.20.0
-PyMySQL==0.7.2
+PyMySQL==1.1.1
 PyOpenGL==3.0.2
 pyOpenSSL==0.15.1
 pyparsing==2.3.1