Update pyyaml requirement to >=4.2b1

ryanpitts · ryanpitts · commit f91934775b52 · 2019-01-04T15:04:35.000-08:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,6 +1,6 @@
 GitPython==2.1.1
 Pygments==2.2.0
 pytest==3.0.6
-PyYAML==3.12
+pyyaml>=4.2b1
 gitdb2==2.0.0
 smmap2==2.0.1
