diff --git a/.travis.yml b/.travis.yml
index a37933e..0e987a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,11 @@ matrix:
       env:
         - PYTHON_VERSION=3.6
         - MINICONDA_URL=https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
+    - os: linux
+      python: 3.7
+      env:
+        - PYTHON_VERSION=3.7
+        - MINICONDA_URL=https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
     - os: osx
       python: 3.5
       env:
diff --git a/protozfits/rawzfits.cpython-35m-x86_64-linux-gnu.so b/protozfits/rawzfits.cpython-35m-x86_64-linux-gnu.so
index ad8f52b..458e93d 100755
Binary files a/protozfits/rawzfits.cpython-35m-x86_64-linux-gnu.so and b/protozfits/rawzfits.cpython-35m-x86_64-linux-gnu.so differ
diff --git a/protozfits/rawzfits.cpython-36m-x86_64-linux-gnu.so b/protozfits/rawzfits.cpython-36m-x86_64-linux-gnu.so
index 6d86f59..ecd7e07 100755
Binary files a/protozfits/rawzfits.cpython-36m-x86_64-linux-gnu.so and b/protozfits/rawzfits.cpython-36m-x86_64-linux-gnu.so differ
diff --git a/protozfits/rawzfits.cpython-37m-x86_64-linux-gnu.so b/protozfits/rawzfits.cpython-37m-x86_64-linux-gnu.so
new file mode 100755
index 0000000..04f24e2
Binary files /dev/null and b/protozfits/rawzfits.cpython-37m-x86_64-linux-gnu.so differ