diff --git a/docs/requirements.txt b/docs/requirements.txt
index 80d76af..3324691 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 marshmallow>=2.0.0rc1
-Flask==1.1.2
+Flask==2.0.0
 sphinx==3.5.3
 sphinx-rtd-theme==0.5.0
 sphinx-issues>=0.2.0
diff --git a/setup.py b/setup.py
index f15def3..9e5a690 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 INSTALL_REQUIRES = ("marshmallow>=2.15.2",)
 EXTRAS_REQUIRE = {
-    "tests": ["pytest", "mock", "faker==4.18.0", "Flask==1.1.2"],
+    "tests": ["pytest", "mock", "faker==4.18.0", "Flask==2.0.0"],
     "lint": ["flake8==3.9.0", "flake8-bugbear==20.11.1", "pre-commit~=2.0"],
 }
 EXTRAS_REQUIRE["dev"] = EXTRAS_REQUIRE["tests"] + EXTRAS_REQUIRE["lint"] + ["tox"]