diff --git a/README.md b/README.md
index e47285d..a8d0b8d 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
 <!--header-start-->
-<img src="https://data.nhm.ac.uk/images/nhm_logo.svg" align="left" width="150px" height="100px" hspace="40"/>
+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://data.nhm.ac.uk/images/nhm_logo.svg">
+  <source media="(prefers-color-scheme: light)" srcset="https://data.nhm.ac.uk/images/nhm_logo_black.svg">
+  <img alt="The Natural History Museum logo." src="https://data.nhm.ac.uk/images/nhm_logo_black.svg" align="left" width="150px" height="100px" hspace="40">
+</picture>
 
 # ckanext-contact