diff --git a/docs_src/changes.md b/docs_src/changes.md
index 4671b6f4..4e1ee1a0 100644
--- a/docs_src/changes.md
+++ b/docs_src/changes.md
@@ -10,6 +10,9 @@ Fix bug that prevented relative paths to the config file from working.
 
 Allow simple Python objects to be used as an argument to `$jsonize()`.
 
+Adjust exclusion of top-level files in wheel creation to meet poetry
+norms and to be consistent across poetry-core versions.  Fixes issue
+[#993](https://github.com/weewx/weewx/issues/993), in part.
 
 ### 5.1.0 07/04/2024
 
diff --git a/pyproject.toml b/pyproject.toml
index f903a117..32639b2b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,8 +44,8 @@ packages = [
 ]
 
 include = [
-    { path = "LICENSE.txt" },
-    { path = "README.md"},
+    { path = "LICENSE.txt", format = "sdist" },
+    { path = "README.md", format = "sdist" },
 ]
 
 exclude = [