diff --git a/pyproject.toml b/pyproject.toml
index 15ed89b040..4d8ea6eb49 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.0"]
+requires = ["setuptools<66.0"]
 build-backend = "setuptools.build_meta"
 
 [tools.coverage.run]
@@ -84,6 +84,7 @@ dependencies = [
     "simplejson==3.8.2",
     "stevedore",
     "wrapt==1.10.6",
+    "setuptools<66.0",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 7f70fef691..a5d7a297a6 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -502,8 +502,9 @@ rq==1.0
     #   django-rq
 ruff==0.8.2
     # via ralph (pyproject.toml)
-setuptools==75.3.0
+setuptools==65.7.0
     # via
+    #   ralph (pyproject.toml)
     #   django-money
     #   django-plainpasswordhasher
     #   markdown
diff --git a/requirements/docs.txt b/requirements/docs.txt
index 01df55b726..4f463b87fc 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -379,8 +379,9 @@ rq==1.0
     # via
     #   ralph (pyproject.toml)
     #   django-rq
-setuptools==75.3.0
+setuptools==65.7.0
     # via
+    #   ralph (pyproject.toml)
     #   django-money
     #   markdown
 simplejson==3.8.2
diff --git a/requirements/prod.txt b/requirements/prod.txt
index b5f7b2c87f..87adbf1842 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -347,8 +347,9 @@ rq==1.0
     # via
     #   ralph (pyproject.toml)
     #   django-rq
-setuptools==75.3.0
+setuptools==65.7.0
     # via
+    #   ralph (pyproject.toml)
     #   django-money
     #   markdown
 simplejson==3.8.2
diff --git a/requirements/test.txt b/requirements/test.txt
index 9bd4c3ff93..51cc4fba6f 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -452,8 +452,9 @@ rq==1.0
     #   django-rq
 ruff==0.8.2
     # via ralph (pyproject.toml)
-setuptools==75.3.0
+setuptools==65.7.0
     # via
+    #   ralph (pyproject.toml)
     #   django-money
     #   django-plainpasswordhasher
     #   markdown