diff --git a/docs/requirements.txt b/docs/requirements.txt
index 86777ec9..7b8f502d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -42,7 +42,7 @@ flake8-mypy==17.8.0
 
 flake8==5.0.4
 
-identify==2.5.6; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+identify==2.6.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 
 idna==3.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index be1c71cb..be403801 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -42,7 +42,7 @@ flake8-mypy==17.8.0
 
 flake8==3.8.4
 
-identify==2.5.5; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+identify==2.6.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 
 idna==2.10; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'