diff --git a/src/eea.corpus/requirements.txt b/src/eea.corpus/requirements.txt
index 16425f8..afca575 100644
--- a/src/eea.corpus/requirements.txt
+++ b/src/eea.corpus/requirements.txt
@@ -92,7 +92,7 @@ toolz==0.9.0
 tqdm==4.19.6
 transaction==2.1.2
 translationstring==1.3
-ujson==1.35
+ujson==5.4.0
 Unidecode==1.0.22
 urllib3==1.22
 venusian==1.1.0