diff --git a/dicomweb-proxy/requirements.txt b/dicomweb-proxy/requirements.txt
index 63c090c..1a6db1d 100644
--- a/dicomweb-proxy/requirements.txt
+++ b/dicomweb-proxy/requirements.txt
@@ -2,11 +2,12 @@ boto3
 botocore
 Flask
 flask-cors
-pydicom>=2.3.0
+pydicom==2.3.0
 waitress
 mysql-connector-python>=8.0.33
 requests-toolbelt>=1.0.0
 highdicom>=0.21.1
 redis>=4.5.5
 orjson
-pillow
\ No newline at end of file
+pillow
+openjpeg