diff --git a/README.md b/README.md
index cafdca6..18392ce 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Minitest::Pngdiff
 
+[![Overall](https://img.shields.io/endpoint?style=flat&url=https://app.opslevel.com/api/service_level/kElmdlGJcV-U0_nFnhChtwrCaCuRevsWpIALgP0LdU4)](https://app.opslevel.com/services/minitest-pngdiff/maturity-report)
+
 Provides assertions that allow direct PNG comparison via ChunkyPNG.
 
 ## Installation
@@ -43,4 +45,4 @@ Bug reports and pull requests are welcome on GitHub at https://github.com/custom
 
 ## License
 
-The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
+The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
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