diff --git a/.travis.yml b/.travis.yml
index 1c710f6..64d3e5f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,17 +5,47 @@ notifications:
   slack:
     on_success: never
     on_failure : never
-python:
-  - "2.7"
-  - "3.4"
-  - "3.5"
-  - "3.6"
+matrix:
+    include:
+    - python: "2.7"
+      env:
+       PARI="pari-2.9.3"
+       PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/unix/"
+    - python: "3.4"
+      env:
+       PARI="pari-2.9.3"
+       PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/unix/"
+    - python: "3.5"
+      env:
+       PARI="pari-2.9.3"
+       PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/unix/"
+    - python: "3.6"
+      env:
+       PARI="pari-2.9.3"
+       PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/unix/"
+    - python: "2.7"
+      env:
+       PARI="pari-2.10-1106-g0cf3527"
+       PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/snapshots/"
+    - python: "3.6"
+      env:
+       PARI="pari-2.10-1106-g0cf3527"
+       PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/snapshots/"
+    - python: "2.7"
+      env:
+        PARI="pari-2.10.0.A2017b"
+        PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/snapshots/"
+    - python: "3.6"
+      env:
+        PARI="pari-2.10.0.A2017b"
+        PARI_URL_PATH="http://pari.math.u-bordeaux.fr/pub/pari/snapshots/"
 # non python dependencies
 before_install:
+  - PARI_TARBALL="${PARI}.tar.gz"
   - sudo apt-get -qq update
-  - wget http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-2.9.3.tar.gz
-  - tar xf pari-2.9.3.tar.gz
-  - cd pari-2.9.3/
+  - wget ${PARI_URL_PATH}/${PARI_TARBALL}
+  - tar xf ${PARI_TARBALL}
+  - cd ${PARI}
   - ./Configure --prefix=/usr/
   - make gp
   - sudo make install