diff --git a/.travis.yml b/.travis.yml
index cfde80d..91f3087 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,13 @@ language: python
 cache: pip
 python:
   - "2.7"
+  - "3.5"
   - "3.6"
+matrix:
+  include:
+    - python: 3.7
+      dist: xenial
+      sudo: true
 before_install:
   - sudo apt-get install python-tk python3-tk ghostscript
 install:
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..f7cc78f
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,7 @@
+include MANIFEST.in
+include setup.py
+include setup.cfg
+include README.md
+include LICENSE
+include requirements.txt
+include requirements-dev.txt
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index a90441d..9a375f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 click==6.7
 matplotlib==2.2.3
-numpy==1.13.3
+numpy==1.15.2
 opencv-python==3.4.2.17
 pandas==0.23.4
 pdfminer.six==20170720
diff --git a/setup.py b/setup.py
index 8b239c6..8d5fe82 100644
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,9 @@ def setup_package():
                         # Full list: https://pypi.python.org/pypi?%3Aaction=list_classifiers
                         'License :: OSI Approved :: MIT License',
                         'Programming Language :: Python :: 2.7',
-                        'Programming Language :: Python :: 3.6'
+                        'Programming Language :: Python :: 3.5',
+                        'Programming Language :: Python :: 3.6',
+                        'Programming Language :: Python :: 3.7'
                     ])
 
     try: