diff --git a/requirements.txt b/requirements.txt
index a4eec0c..6f426c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ importlib-metadata==0.20
 more-itertools==7.0.0
 numpy==1.17.2; sys_platform != 'zos'
 psutil==5.6.6; sys_platform != 'zos'
-pydantic==0.27
+pydantic==1.6.2
 requests==2.22.0
 # spacy==2.2.0.dev18; sys_platform != 'zos'
 # https://github.com/explosion/spacy-models/releases/download/en_core_web_sm-2.1.0/en_core_web_sm-2.1.0.tar.gz#egg=en_core_web_sm; sys_platform != 'zos'