diff --git a/requirements.txt b/requirements.txt
index dba238d..a2b6e16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 cwltool==1.0.20191022103248
 future>=0.16.0
 requests>=2.18.2
-py-tes>=0.3.0
+py-tes>=0.4.0
 PyJWT>=1.6.4
 typing_extensions>=3.7.4
diff --git a/setup.py b/setup.py
index 0b6461c..71e5786 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@ def find_version(*file_paths):
     install_requires=[
         "cwltool==1.0.20191022103248",
         "future>=0.16.0",
-        "py-tes>=0.3.0",
+        "py-tes>=0.4.0",
         "PyJWT>=1.6.4",
         "requests>=2.14.2",
         "typing_extensions>=3.7.4"