diff --git a/requirements/requirements.docs.txt b/requirements/requirements.docs.txt
index 6ef57dc..1b3ea2f 100644
--- a/requirements/requirements.docs.txt
+++ b/requirements/requirements.docs.txt
@@ -2,4 +2,4 @@ sphinx>=1.7.4
 sphinx_rtd_theme
 sphinx-autodoc-typehints>=1.3.0
 recommonmark
-pyyaml==3.12
+pyyaml==5.4
diff --git a/requirements/requirements.gpu-cu100.txt b/requirements/requirements.gpu-cu100.txt
index 5131b29..0c48db2 100644
--- a/requirements/requirements.gpu-cu100.txt
+++ b/requirements/requirements.gpu-cu100.txt
@@ -1,4 +1,4 @@
-pyyaml==3.12
+pyyaml==5.4
 mxnet-cu100mkl==1.3.1
 numpy>=1.14
 typing
diff --git a/requirements/requirements.gpu-cu80.txt b/requirements/requirements.gpu-cu80.txt
index 9468d60..b165542 100644
--- a/requirements/requirements.gpu-cu80.txt
+++ b/requirements/requirements.gpu-cu80.txt
@@ -1,4 +1,4 @@
-pyyaml==3.12
+pyyaml==5.4
 mxnet-cu80mkl==1.3.1
 numpy>=1.14
 typing
diff --git a/requirements/requirements.gpu-cu90.txt b/requirements/requirements.gpu-cu90.txt
index 5586ab7..012cc8c 100644
--- a/requirements/requirements.gpu-cu90.txt
+++ b/requirements/requirements.gpu-cu90.txt
@@ -1,4 +1,4 @@
-pyyaml==3.12
+pyyaml==5.4
 mxnet-cu90mkl==1.3.1
 numpy>=1.14
 typing
diff --git a/requirements/requirements.gpu-cu92.txt b/requirements/requirements.gpu-cu92.txt
index 8417569..fd38b79 100644
--- a/requirements/requirements.gpu-cu92.txt
+++ b/requirements/requirements.gpu-cu92.txt
@@ -1,4 +1,4 @@
-pyyaml==3.12
+pyyaml==5.4
 mxnet-cu92mkl==1.3.1
 numpy>=1.14
 typing
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 3a9ac41..a6caf8c 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -1,4 +1,4 @@
-pyyaml==3.12
+pyyaml==5.4
 mxnet-mkl==1.3.1
 numpy>=1.14
 typing