diff --git a/README.md b/README.md
index 9048ca22..6e5ec0f7 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Thera-Py
 
-[![image](https://img.shields.io/pypi/v/thera-py.svg)](https://pypi.python.org/pypi/thera-py) [![image](https://img.shields.io/pypi/l/thera-py.svg)](https://pypi.python.org/pypi/thera-py) [![image](https://img.shields.io/pypi/pyversions/thera-py.svg)](https://pypi.python.org/pypi/thera-py) [![Actions status](https://github.com/cancervariants/therapy-normalization/actions/workflows/checks.yaml/badge.svg)](https://github.com/cancervariants/therapy-normalization/actions/checks.yaml)[![DOI: 10.1093/jamiaopen/ooad093](https://img.shields.io/badge/DOI-10.1093%2Fjamiaopen%2Fooad093-blue)](https://doi.org/10.1093/jamiaopen/ooad093)
+[![image](https://img.shields.io/pypi/v/thera-py.svg)](https://pypi.python.org/pypi/thera-py) [![image](https://img.shields.io/pypi/l/thera-py.svg)](https://pypi.python.org/pypi/thera-py) [![image](https://img.shields.io/pypi/pyversions/thera-py.svg)](https://pypi.python.org/pypi/thera-py) [![Actions status](https://github.com/cancervariants/therapy-normalization/actions/workflows/checks.yaml/badge.svg)](https://github.com/cancervariants/therapy-normalization/actions/checks.yaml) [![DOI: 10.1093/jamiaopen/ooad093](https://img.shields.io/badge/DOI-10.1093%2Fjamiaopen%2Fooad093-blue)](https://doi.org/10.1093/jamiaopen/ooad093)
 
 <!-- description -->
 `Thera-Py` normalizes free-text names and references for drugs and other biomedical therapeutics to stable, unambiguous concept identifiers to support genomic knowledge harmonization.