diff --git a/README.md b/README.md
index e1265a9..fb5969a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # IACT Telescopes estimator
 
+[![CI](https://github.com/cta-observatory/iact-estimator/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/cta-observatory/iact-estimator/actions/workflows/ci.yml)
+
 ``iact-estimator`` is a Python3-based package that allows
 the estimation of the performance of an IACT telescope system
 to detect a gamma-ray source.
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 2f7111d..2927fe8 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -6,6 +6,12 @@
 Documentation of ``iact-estimator``
 ===================================
 
+|ci|
+
+.. |ci| image:: https://github.com/cta-observatory/iact-estimator/actions/workflows/ci.yml/badge.svg?branch=main
+    :alt: CI
+    :target: https://github.com/cta-observatory/iact-estimator/actions/workflows/ci.yml
+
 ``iact-estimator`` is a Python3 package which allows
 to evaluate the ability of an IACT telescope system
 to detect a gamma-ray source.