diff --git a/Makefile b/Makefile
index 437050ed4..219dda1de 100644
--- a/Makefile
+++ b/Makefile
@@ -85,6 +85,8 @@ release-test:
 sdist:
 	python3 -m build --help > /dev/null 2>&1 || python3 -m pip install build
 	python3 -m build --sdist
+	python3 -m twine --help > /dev/null 2>&1 || python3 -m pip install twine
+	python3 -m twine check --strict dist/*
 
 .PHONY: test
 test:
diff --git a/RELEASING.md b/RELEASING.md
index a6049b685..aa7511c8a 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -24,7 +24,6 @@ Released quarterly on January 2nd, April 1st, July 1st and October 15th.
 * [ ] Create and check source distribution:
   ```bash
   make sdist
-  python3 -m twine check --strict dist/*
   ```
 * [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/main/RELEASING.md#binary-distributions)
 * [ ] Check and upload all binaries and source distributions e.g.:
@@ -61,7 +60,6 @@ Released as needed for security, installation or critical bug fixes.
 * [ ] Create and check source distribution:
   ```bash
   make sdist
-  python3 -m twine check --strict dist/*
   ```
 * [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/main/RELEASING.md#binary-distributions)
 * [ ] Check and upload all binaries and source distributions e.g.:
@@ -91,7 +89,6 @@ Released as needed privately to individual vendors for critical security-related
 * [ ] Create and check source distribution:
   ```bash
   make sdist
-  python3 -m twine check --strict dist/*
   ```
 * [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/main/RELEASING.md#binary-distributions)
 * [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases)