diff --git a/.travis.yml b/.travis.yml
index e00a1596b..3b76f7184 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,8 @@ matrix:
           env: BUILDENV=precise
         - python: "2.7"
           env: BUILDENV=latest
+        - python: "2.7"
+          env: BUILDENV=trunk
         - python: "pypy"
           env: BUILDENV=latest
     allow_failures:
diff --git a/.travis/requirements-trunk.txt b/.travis/requirements-trunk.txt
new file mode 100644
index 000000000..482cd91a3
--- /dev/null
+++ b/.travis/requirements-trunk.txt
@@ -0,0 +1,3 @@
+-r requirements-latest.txt
+git+https://github.com/scrapy/w3lib#egg=w3lib
+git+https://github.com/scrapy/queuelib#egg=queuelib
diff --git a/tox.ini b/tox.ini
index 9ee3923f2..54b51ed7c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py26, py27, lucid, precise
+envlist = py26, py27, lucid, precise, trunk
 
 [testenv]
 deps =
@@ -22,6 +22,11 @@ basepython = python2.7
 deps =
     -r{toxinidir}/.travis/requirements-precise.txt
 
+[testenv:trunk]
+basepython = python2.7
+deps =
+    -r{toxinidir}/.travis/requirements-trunk.txt
+
 [testenv:windows]
 commands =
     {toxinidir}/bin/runtests.bat []