diff --git a/lib/pyyaml b/lib/pyyaml
index 7e026bf..0f64cbf 160000
--- a/lib/pyyaml
+++ b/lib/pyyaml
@@ -1 +1 @@
-Subproject commit 7e026bfee9cc0bddeb1bbca0c4a0bcd826c2bfdf
+Subproject commit 0f64cbfa54b0b22dc7b776b7b98a7cd657e84d78
diff --git a/setup.py b/setup.py
index 975deb3..6fe1d14 100644
--- a/setup.py
+++ b/setup.py
@@ -73,7 +73,7 @@ setup(
     ],
 
     install_requires=[
-        'PyYAML>=3.12,<4',
+        'PyYAML>=5.1.2,<6',
     ],
 
     # To provide executable scripts, use entry points in preference to the