diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index d82d399836b7554c812e7b667fd671011193bb1e..c72d9c286301004b8945a57c6a9c0f73b2604df1 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -68,7 +68,7 @@ requirements:
    - gmp
    - graphviz
    # This needs to remained pinned at 2.6
-   - gsl>=2.6, 2.7
+   - gsl>=2.6, <2.7
    - hdf5
    - icu
    - inja