diff --git a/opendata/requirements.txt b/opendata/requirements.txt
index a4ad714b..7cee86cc 100644
--- a/opendata/requirements.txt
+++ b/opendata/requirements.txt
@@ -1,7 +1,7 @@
 pandas==0.23.4
 numpy==1.15.3
 yamlordereddictloader==0.4.0
-PyYAML==3.13
+PyYAML==5.1
 ddlparse==1.1.1
 jours-feries-france==0.3.0
 vacances-scolaires-france==0.5