diff --git a/.travis.yml b/.travis.yml
index 94a4f69..7356ca2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,9 +3,9 @@ sudo: false
 cache: apt
 
 before_script:
-  - wget http://software-lab.de/picoLisp-16.12.tgz -O /tmp/picolisp.tgz
+  - wget http://software-lab.de/picoLisp-17.6.tgz -O /tmp/picolisp.tgz
   - cd /tmp; tar -xf /tmp/picolisp.tgz
   - cd /tmp/picoLisp/src64 && make
 
 script:
-  - cd ${TRAVIS_BUILD_DIR} && (for i in plain default; do TEST_REPORTER="$i" /tmp/picoLisp/pil test.l; done)
+  - cd ${TRAVIS_BUILD_DIR} && (for i in plain default; do PIL_NAMESPACES=false TEST_REPORTER="$i" /tmp/picoLisp/pil test.l; done)
diff --git a/README.md b/README.md
index 50b075c..c047752 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Please read [EXPLAIN.md](EXPLAIN.md) to learn more about PicoLisp and this Unit
 # Requirements
 
   * PicoLisp 32-bit or 64-bit v3.1.9+
-  * Tested up to PicoLisp v16.12
+  * Tested up to PicoLisp v17.6
 
 # Getting Started