diff --git a/2019-08-06-bob-ross-requirements.txt b/2019-08-06-bob-ross-requirements.txt
index 238fff0..aa834c9 100644
--- a/2019-08-06-bob-ross-requirements.txt
+++ b/2019-08-06-bob-ross-requirements.txt
@@ -48,7 +48,7 @@ pyparsing==2.4.2
 pyrsistent==0.15.4
 python-dateutil==2.8.0
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.1
 pyzmq==18.0.2
 qtconsole==4.5.2
 scipy==1.3.0
diff --git a/dgrtwo-translations/requirements-2019-04-22.txt b/dgrtwo-translations/requirements-2019-04-22.txt
index 94d090c..155a01e 100644
--- a/dgrtwo-translations/requirements-2019-04-22.txt
+++ b/dgrtwo-translations/requirements-2019-04-22.txt
@@ -116,7 +116,7 @@ pyrsistent==0.15.7
 pytest==5.3.4
 python-dateutil==2.8.0
 pytz==2019.3
-PyYAML==5.3
+PyYAML==5.1
 pyzmq==18.1.1
 qgrid==1.2.0
 readme-renderer==24.0
diff --git a/requirements.txt b/requirements.txt
index 359e86e..c137106 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ pyparsing==2.3.1
 pytest==4.3.0
 python-dateutil==2.7.5
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.1
 pyzmq==17.1.2
 qgrid==1.1.1
 qtconsole==4.4.3