diff --git a/environment.yml b/environment.yml
index c1df84d..88fb0f0 100644
--- a/environment.yml
+++ b/environment.yml
@@ -9,18 +9,12 @@ dependencies:
   - dill
   - pandas
   - partd
-  - bokeh
-  - dask
   - scipy
   - zstd
   - zlib
   - zict
   - zeromq
   - yaml
-  - xz
-  - xlwt
-  - wheel
-  - tornado
   - sqlite
   - sympy
   - sip
@@ -29,6 +23,5 @@ dependencies:
   - ipython
   - html5lib
   - jupyter
-  - libssh2
   - octave_kernel
   - python=3.7