diff --git a/SENET/requirement.txt b/SENET/requirement.txt
index 21554873..8428039a 100644
--- a/SENET/requirement.txt
+++ b/SENET/requirement.txt
@@ -72,7 +72,7 @@ thinc==6.10.2
 timeout-decorator==0.4.0
 toolz==0.9.0
 tqdm==4.19.5
-ujson==1.35
+ujson==5.2.0
 uritemplate==3.0.0
 urllib3==1.22
 wcwidth==0.1.7
diff --git a/SENET/src/requirement.txt b/SENET/src/requirement.txt
index 21554873..8428039a 100644
--- a/SENET/src/requirement.txt
+++ b/SENET/src/requirement.txt
@@ -72,7 +72,7 @@ thinc==6.10.2
 timeout-decorator==0.4.0
 toolz==0.9.0
 tqdm==4.19.5
-ujson==1.35
+ujson==5.2.0
 uritemplate==3.0.0
 urllib3==1.22
 wcwidth==0.1.7