diff --git a/.travis.yml b/.travis.yml
index 19da1ae..1e9601d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,4 +13,4 @@ matrix:
   - julia: nightly
 after_success:
   - julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'
-  - julia -e 'using Pkg; Pkg.add("Documenter"); include(joinpath("docs", "make.jl"))'
+  - julia -e 'using Pkg; ps=Pkg.PackageSpec(name="Documenter", version="0.19"); Pkg.add(ps); Pkg.pin(ps); include(joinpath("docs", "make.jl"))'