diff --git a/.travis.yml b/.travis.yml
index 2b02e92..565fa0f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -54,6 +54,16 @@ script:
  - raco setup --check-pkg-deps --pkgs typed-map typed-map-lib typed-map-test typed-map-doc
  - raco pkg install --deps search-auto doc-coverage
  - raco doc-coverage typed-map
+ - echo
+ - mv ~/.racket ~/.racket_1
+ - echo
+ - raco pkg install -j 1 --deps search-auto typed-map
+ - raco test -p typed-map typed-map-lib typed-map-test typed-map-doc
+ - raco setup --check-pkg-deps --pkgs typed-map typed-map-lib typed-map-test typed-map-doc
+ - raco doc-coverage typed-map
+ - echo
+ - mv ~/.racket ~/.racket_2
+ - mv ~/.racket_1 ~/.racket
 
 after_success:
  - raco pkg install --deps search-auto cover cover-codecov