diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index 02307bd..ab7bfce 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.10"]
+        python-version: ["3.8"]
 
     steps:
     
diff --git a/README.md b/README.md
index 3d9c0a3..f0d0735 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 # COOLEST: a standard for strong gravitational lensing studies
 
-![PyPi python support](https://img.shields.io/badge/Python-3.7%20|%203.10-blue)
+![PyPi python support](https://img.shields.io/badge/Python-3.8-blue)
 [![Tests](https://github.com/aymgal/COOLEST/actions/workflows/ci-tests.yml/badge.svg?branch=main)](https://github.com/aymgal/COOLEST/actions/workflows/ci-tests.yml)
 [![Coverage Status](https://coveralls.io/repos/github/aymgal/COOLEST/badge.svg)](https://coveralls.io/github/aymgal/COOLEST)
 [![Documentation Status](https://readthedocs.org/projects/coolest/badge/?version=latest)](https://coolest.readthedocs.io/en/latest/?badge=latest)
diff --git a/requirements_tests.txt b/requirements_tests.txt
index 705f5fa..3e7fcbc 100644
--- a/requirements_tests.txt
+++ b/requirements_tests.txt
@@ -1,2 +1,2 @@
 pytest
-lenstronomy==1.11.0
+lenstronomy==1.11.3