diff --git a/pyproject.toml b/pyproject.toml
index 960d7891a8..93c70256eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -416,27 +416,27 @@ manifest-path = "rust/Cargo.toml"
 module-name = "synapse.synapse_rust"
 python-source = "."
 include = [
-    "AUTHORS.rst",
-    "book.toml",
-    "changelog.d/**/*",
-    "CHANGES.md",
-    "CONTRIBUTING.md",
-    "demo/**/*",
-    "docs/**/*",
-    "INSTALL.md",
-    "LICENSE-AGPL-3.0",
-    "LICENSE-COMMERCIAL",
-    "mypy.ini",
-    "scripts-dev/**/*",
-    "synmark/**/*",
-    "sytest-blacklist",
-    "tests/**/*",
-    "UPGRADE.rst",
-    "Cargo.toml",
-    "Cargo.lock",
-    "rust/Cargo.toml",
-    "rust/build.rs",
-    "rust/src/**",
+    { path = "AUTHORS.rst", format = "sdist" },
+    { path = "book.toml", format = "sdist" },
+    { path = "changelog.d/**/*", format = "sdist" },
+    { path = "CHANGES.md", format = "sdist" },
+    { path = "CONTRIBUTING.md", format = "sdist" },
+    { path = "demo/**/*", format = "sdist" },
+    { path = "docs/**/*", format = "sdist" },
+    { path = "INSTALL.md", format = "sdist" },
+    { path = "LICENSE-AGPL-3.0", format = "sdist" },
+    { path = "LICENSE-COMMERCIAL", format = "sdist" },
+    { path = "mypy.ini", format = "sdist" },
+    { path = "scripts-dev/**/*", format = "sdist" },
+    { path = "synmark/**/*", format = "sdist" },
+    { path = "sytest-blacklist", format = "sdist" },
+    { path = "tests/**/*", format = "sdist" },
+    { path = "UPGRADE.rst", format = "sdist" },
+    { path = "Cargo.toml", format = "sdist" },
+    { path = "Cargo.lock", format = "sdist" },
+    { path = "rust/Cargo.toml", format = "sdist" },
+    { path = "rust/build.rs", format = "sdist" },
+    { path = "rust/src/**", format = "sdist" },
 ]
 exclude = ["synapse/*.so"]