diff --git a/environment.yml b/environment.yml
index 16bab4d..f9bc737 100644
--- a/environment.yml
+++ b/environment.yml
@@ -4,7 +4,7 @@ channels:
 - conda-forge
 dependencies:
 - python>=3.6.5
-- taxcalc>=2.4.2
+- taxcalc<2.8.0
 - behresp>=0.9.0
 - pandas>=0.23
 - numpy>=1.13
@@ -12,7 +12,7 @@ dependencies:
 - ipython
 - pytest
 - dask
-- bokeh
+- bokeh<2.0.0
 - markdown
 - pip
 - pip: