diff --git a/go.mod b/go.mod
index 2c0d6a1f8..1c286e9b8 100644
--- a/go.mod
+++ b/go.mod
@@ -48,7 +48,7 @@ require (
 
 require (
 	github.com/bufbuild/buf v1.35.1
-	github.com/creachadair/atomicfile v0.2.6
+	github.com/creachadair/atomicfile v0.3.5
 	github.com/creachadair/taskgroup v0.3.2
 	github.com/go-pkgz/jrpc v0.2.0
 	github.com/google/go-cmp v0.6.0
diff --git a/go.sum b/go.sum
index 3112bee66..68e7c7d51 100644
--- a/go.sum
+++ b/go.sum
@@ -219,8 +219,10 @@ github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwc
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
 github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
-github.com/creachadair/atomicfile v0.2.6 h1:FgYxYvGcqREApTY8Nxg8msM6P/KVKK3ob5h9FaRUTNg=
-github.com/creachadair/atomicfile v0.2.6/go.mod h1:BRq8Une6ckFneYXZQ+kO7p1ZZP3I2fzVzf28JxrIkBc=
+github.com/creachadair/atomicfile v0.3.5 h1:i93bxeaH/rQR6XfJslola3XkOM1nEP3eIexuk9SWcSc=
+github.com/creachadair/atomicfile v0.3.5/go.mod h1:m7kIY2OUMygtETnMYe141rubsG4b+EusFLinlxxdHYM=
+github.com/creachadair/mds v0.16.0 h1:v6DlvKXClowXFg4hkjLCR1FEFiREMf0qgX+Lm5GsEKk=
+github.com/creachadair/mds v0.16.0/go.mod h1:4vrFYUzTXMJpMBU+OA292I6IUxKWCCfZkgXg+/kBZMo=
 github.com/creachadair/taskgroup v0.3.2 h1:zlfutDS+5XG40AOxcHDSThxKzns8Tnr9jnr6VqkYlkM=
 github.com/creachadair/taskgroup v0.3.2/go.mod h1:wieWwecHVzsidg2CsUnFinW1faVN4+kq+TDlRJQ0Wbk=
 github.com/creachadair/tomledit v0.0.23 h1:ohYJjMsxwzj4dDzKaBWFbWH5J+3LO/8CYnlVY+baBWA=