diff --git a/README.md b/README.md
index 5af9907..db652b4 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 ## Badges
 
 [![status-badge](https://ci.c-base.org/api/badges/9/status.svg)](https://ci.c-base.org/repos/9)
+[![Tested with Hypothesis](./docs/hypothesis-tested-brightgreen.svg)](https://hypothesis.readthedocs.io/)
 
 ## Development
 
diff --git a/docs/hypothesis-tested-brightgreen.svg b/docs/hypothesis-tested-brightgreen.svg
new file mode 100644
index 0000000..830e6bb
--- /dev/null
+++ b/docs/hypothesis-tested-brightgreen.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="114" height="20" role="img" aria-label="hypothesis: tested"><title>hypothesis: tested</title><linearGradient id="s" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="r"><rect width="114" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#r)"><rect width="69" height="20" fill="#555"/><rect x="69" width="45" height="20" fill="#4c1"/><rect width="114" height="20" fill="url(#s)"/></g><g fill="#fff" text-anchor="middle" font-family="Verdana,Geneva,DejaVu Sans,sans-serif" text-rendering="geometricPrecision" font-size="110"><text aria-hidden="true" x="355" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="590">hypothesis</text><text x="355" y="140" transform="scale(.1)" fill="#fff" textLength="590">hypothesis</text><text aria-hidden="true" x="905" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="350">tested</text><text x="905" y="140" transform="scale(.1)" fill="#fff" textLength="350">tested</text></g></svg>
\ No newline at end of file