diff --git a/requirements.in b/requirements.in
index db05712..c2ba83f 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,4 +1,3 @@
 marshmallow>=3.0
 attrs
 typing_inspect
-dataclasses; python_version < "3.7"
diff --git a/setup.py b/setup.py
index ba147b6..97dbb0e 100755
--- a/setup.py
+++ b/setup.py
@@ -90,7 +90,7 @@ def read_extras(*prefixes):
     keywords=[
         # eg: "keyword1", "keyword2", "keyword3",
     ],
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     install_requires=INSTALL_REQUIRES
     # eg: "aspectlib==1.1.1", "six>=1.7",
     ,