diff --git a/environment.yml b/environment.yml
index 6b19c0f00c5df0e7bc561f356f0beb91432d70d7..c104abba2d217779cc04dfa963e9e020a849a81e 100644
--- a/environment.yml
+++ b/environment.yml
@@ -7,7 +7,7 @@ dependencies:
   - python=2.7.11
   - conda-forge::scipy=1.0.1
   - conda-forge::numpy=1.14.2
-  - bcbio::bx-python=0.7.3
+  - bcbio::bx-python=0.7.1
   - bioconda::pysam=0.14.1
   - cooler=0.8.3
   - bowtie2=2.3.5