diff --git a/CHANGES/10860.packaging.rst b/CHANGES/10860.packaging.rst
new file mode 100644
index 00000000000..be4043f4065
--- /dev/null
+++ b/CHANGES/10860.packaging.rst
@@ -0,0 +1,2 @@
+Excluded generated Cython :file:`.hash/` directories from source distributions and wheels.
+-- by :user:`nightcityblade`.
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 7c5613648ca..23d3fdcff08 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -283,6 +283,7 @@ Moss Collum
 Mun Gwan-gyeong
 Navid Sheikhol
 Nicolas Braem
+Nightcity Blade
 Nikolay Kim
 Nikolay Novik
 Nikolay Tiunov
diff --git a/MANIFEST.in b/MANIFEST.in
index ea5d39d4722..787143a1e70 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -17,5 +17,6 @@ global-exclude *.lib
 global-exclude *.dll
 global-exclude *.a
 global-exclude *.obj
+recursive-exclude aiohttp .hash/*
 exclude aiohttp/*.html
 prune docs/_build
diff --git a/pyproject.toml b/pyproject.toml
index 7ad4f54b0c3..81779a70482 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -86,7 +86,7 @@ include = [
 ]
 
 [tool.setuptools.exclude-package-data]
-"*" = ["*.c", "*.h"]
+"*" = ["*.c", "*.h", ".hash/*"]
 
 [tool.towncrier]
   package = "aiohttp"