add doi
diff --git a/README.md b/README.md
index ffba70f..2ac66c2 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
[](https://cran.r-project.org/package=kableExtra)
[](https://cran.r-project.org/package=kableExtra)
[](https://cran.r-project.org/package=kableExtra)
+[](https://doi.org/10.5281/zenodo.1035917)
+
***