diff --git a/.travis.yml b/.travis.yml
index c9fa17f..7c7031f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,8 +16,7 @@ script:
   - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
   - julia -e 'Pkg.clone("https://github.com/Samayel/PrimeSieve.jl.git"); Pkg.build("PrimeSieve");'
   - julia -e 'Pkg.clone(pwd()); Pkg.build("Brainstorm")'
-  - julia -e 'using AutoHashEquals'
-  - julia -e 'using ParserCombinator'
+  - julia -e 'using LightGraphs'       # trigger precompilation
   - julia --check-bounds=yes -e 'Pkg.test("Brainstorm"; coverage=true)'
 after_success:
   - julia -e 'Pkg.add("Coverage")'