diff --git a/masterenv.yml b/masterenv.yml
index 72d2b64..2c1879f 100644
--- a/masterenv.yml
+++ b/masterenv.yml
@@ -3,21 +3,16 @@ name: masterenv
 channels:
   - bioconda
   - conda-forge
-  - defaults
-  - r
 dependencies:
   - bedtools
   - python
-  - r-essentials
   - r-seqinr
   - numpy
   - pybigWig
-# cluster
   - cd-hit
   - jellyfish
   - r-base>=3.5.1
   - r-data.table
-  # - r-seqinr
   - r-pbapply
   - r-igraph
   - r-stringi