diff --git a/environment.yml b/environment.yml
index 265b4298..ce31f180 100644
--- a/environment.yml
+++ b/environment.yml
@@ -2,7 +2,7 @@ name: t3_env
 channels:
   - conda-forge
 dependencies:
-  - python >=3.8
+  - python >=3.7
   - pydot
   - cantera >=2.6
   - ca-certificates
@@ -21,7 +21,7 @@ dependencies:
   - rmg::pydqed
   - psutil
   - rmg::pydas
-  - cclib >=1.7.2
+  - conda-forge::cclib >=1.6.3,<1.8.0
   - openbabel >=3.1.1
   - lpsolve55
   - numdifftools >=0.9.41