diff --git a/.travis.yml b/.travis.yml
index 2230f8d..b5b9a2f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,11 +29,11 @@ addons:
       - liblapack-dev
 
 install:
-  - travis_wait 60 "bin/bootstrap.sh $VIRTUAL_ENV"
+  - "bin/bootstrap.sh $VIRTUAL_ENV"
 
 script:
   - python setup.py test
-  # - tests/run.sh
+  - tests/run.sh
 
 notifications:
   email:
diff --git a/deenurp.py b/deenurp.py
index ffc85ae..4f0d56f 100755
--- a/deenurp.py
+++ b/deenurp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 import deenurp
 import sys
 
diff --git a/requirements.txt b/requirements.txt
index 9f0e38d..7a49869 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@
 # - correct any incompatibilities (eg, seqmagick running under python2 requires biopython <= 1.66
 
 MarkupSafe==1.0
-numpy==1.14.0
+numpy==1.16.4
 setuptools==38.4.0
 six==1.11.0
 DendroPy==4.3.0
@@ -25,7 +25,7 @@ pytz==2017.3
 scikit-learn==0.19.1
 Cython==0.27.3
 futures==3.2.0
-hdbscan==0.8.11
+hdbscan==0.8.16
 pandas==0.22.0
 peasel==0.3.1
 scipy==1.0.0