diff --git a/poetry.lock b/poetry.lock
index f4b6868..f078af1 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -522,10 +522,10 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pygments"
-version = "2.7.2"
+version = "2.7.4"
 description = "Pygments is a syntax highlighting package written in Python."
 category = "main"
-optional = true
+optional = false
 python-versions = ">=3.5"
 
 [[package]]
@@ -1240,8 +1240,8 @@ pyflakes = [
     {file = "pyflakes-2.3.1.tar.gz", hash = "sha256:f5bc8ecabc05bb9d291eb5203d6810b49040f6ff446a756326104746cc00c1db"},
 ]
 pygments = [
-    {file = "Pygments-2.7.2-py3-none-any.whl", hash = "sha256:88a0bbcd659fcb9573703957c6b9cff9fab7295e6e76db54c9d00ae42df32773"},
-    {file = "Pygments-2.7.2.tar.gz", hash = "sha256:381985fcc551eb9d37c52088a32914e00517e57f4a21609f48141ba08e193fa0"},
+    {file = "Pygments-2.7.4-py3-none-any.whl", hash = "sha256:bc9591213a8f0e0ca1a5e68a479b4887fdc3e75d0774e5c71c31920c427de435"},
+    {file = "Pygments-2.7.4.tar.gz", hash = "sha256:df49d09b498e83c1a73128295860250b0b7edd4c723a32e9bc0d295c7c2ec337"},
 ]
 pyparsing = [
     {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},