diff --git a/recipes/fit-psd-lightcurve/env.yml b/recipes/fit-psd-lightcurve/env.yml
index c993ba7..f411daa 100644
--- a/recipes/fit-psd-lightcurve/env.yml
+++ b/recipes/fit-psd-lightcurve/env.yml
@@ -13,3 +13,4 @@ dependencies:
   - matplotlib
   - pip:
     - git+https://github.com/cgalelli/gammapy_SyLC.git
+