diff --git a/scripts/python/xml2vhdl-ox/requirements.txt b/scripts/python/xml2vhdl-ox/requirements.txt
index 8079ee7..37780f5 100644
--- a/scripts/python/xml2vhdl-ox/requirements.txt
+++ b/scripts/python/xml2vhdl-ox/requirements.txt
@@ -16,7 +16,7 @@ packaging==19.0
 pygments==2.3.1
 pyparsing==2.3.1
 pytz==2018.9
-pyyaml==3.13
+pyyaml==5.4
 releases==1.6.1
 requests==2.21.0
 semantic-version==2.6.0
diff --git a/scripts/python/xml2vhdl-ox/xml2vhdl/requirements.txt b/scripts/python/xml2vhdl-ox/xml2vhdl/requirements.txt
index 1f02723..702166a 100644
--- a/scripts/python/xml2vhdl-ox/xml2vhdl/requirements.txt
+++ b/scripts/python/xml2vhdl-ox/xml2vhdl/requirements.txt
@@ -17,7 +17,7 @@ packaging==19.2
 pygments==2.4.2
 pyparsing==2.4.2
 pytz==2019.3
-pyyaml==3.13
+pyyaml==5.4
 releases==1.6.1
 requests==2.22.0
 semantic-version==2.8.2