diff --git a/requirements.txt b/requirements.txt
index 608980c..0f8d668 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,5 +6,5 @@ Sphinx==2.1.2
 sphinxcontrib-websupport==1.1.2
 uvloop==0.12.*; sys_platform != 'win32' and sys_platform != 'cygwin' and sys_platform != 'cli'
 responder==1.3.1
-marshmallow==2.19.2
+marshmallow==2.19.5
 sphinxcontrib-openapi==0.4.0
diff --git a/setup.cfg b/setup.cfg
index f3cdcd2..2b08529 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,7 +37,7 @@ install_requires =
     PyYAML>=4.2b1
     responder==1.3.1
     uvloop==0.12.*; sys_platform != 'win32' and sys_platform != 'cygwin' and sys_platform != 'cli'
-    marshmallow==2.19.2
+    marshmallow==2.19.5
 tests_require =
     pytest==4.0.2
     pytest-cov==2.6.0