Doctests are run on all versions... oops!

I had only installed semver for Py3.6, thinking that was the only
version that ran doctests.

1 files changed, 1 insertions, 1 deletions

diff --git a/Pipfile b/Pipfile
index 3607a9f..cbf6089 100644
--- a/Pipfile
+++ b/Pipfile
@@ -5,7 +5,7 @@ pytest-cov          = "*"
 pytest-mock         = ">=1.1"
 hypothesis          = ">=3.8.0"
 pytest-faulthandler = {version = "*", platform_python_implementation = "== 'CPython'"}
-semver              = {python_version = "== '3.6'"}
+semver              = "*"
 
 # These packages are standard on newer python versions.
 pathlib = {version = "*", python_version = "< '3.4'"}