diff --git a/requirements.txt b/requirements.txt
index c5f9938..d08527e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 attrs>=21.2.0
 iniconfig>=1.1.1
-packaging>=21.3
+packaging>=21.0
 pluggy>=1.0.0
 py>=1.11.0
 pyparsing>=2.4.7
diff --git a/setup.py b/setup.py
index d7130dc..55581e8 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
     install_requires=[
         "attrs>=21.2.0",
         "iniconfig>=1.1.1",
-        "packaging>=21.3",
+        "packaging>=21.0",
         "pluggy>=1.0.0",
         "py>=1.11.0",
         "pyparsing>=2.4.7",