diff --git a/apiserver/requirements.txt b/apiserver/requirements.txt
index bd1ce5d..cc58b4e 100644
--- a/apiserver/requirements.txt
+++ b/apiserver/requirements.txt
@@ -4,14 +4,14 @@ boto3==1.14.13
 dpath>=1.4.2,<2.0
 elasticsearch>=7.0.0,<8.0.0
 fastjsonschema>=2.8
-Flask-Compress>=1.4.0
-Flask-Cors>=3.0.5
-Flask>=0.12.2
+flask-compress>=1.4.0
+flask-cors>=3.0.5
+flask>=0.12.2
 funcsigs==1.0.2
 furl>=2.0.0
 gunicorn>=19.7.1
 humanfriendly==4.18
-Jinja2==2.10
+jinja2==2.10
 jsonmodels>=2.3
 jsonschema>=2.6.0
 luqum>=0.10.0
@@ -19,7 +19,7 @@ mongoengine==0.19.1
 nested_dict>=1.61
 psutil>=5.6.5
 pyhocon>=0.3.35
-pyjwt>=1.3.0
+pyjwt<2.0.0
 pymongo==3.10.1
 python-rapidjson>=0.6.3
 redis>=2.10.5