diff --git a/.travis.yml b/.travis.yml
index 9ae6bf08..282a766b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,6 @@ before_install:
 
 script:
   - cp ./test/config.test1.yaml ./config.yaml
-  - snakemake
-  - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then snakemake solve_all_elec_networks; fi
+  - snakemake solve_all_elec_networks
   - rm -rf resources/*.nc resources/*.geojson resources/*.h5 networks results
   # could repeat for more configurations in future
diff --git a/environment.yaml b/environment.yaml
index 46ab4fa8..dc7baee8 100644
--- a/environment.yaml
+++ b/environment.yaml
@@ -42,7 +42,7 @@ dependencies:
   - conda-forge::libgdal
 
   - pip:
-    - vresutils>=0.3
+    - git+https://github.com/FRESNA/vresutils.git#egg=vresutils
     - git+https://github.com/PyPSA/pypsa.git#egg=pypsa  # until pypsa/pypsa#102 closed
     - git+https://github.com/PyPSA/glaes.git#egg=glaes
     - git+https://github.com/PyPSA/geokit.git#egg=geokit