diff --git a/go.mod b/go.mod
index 98a198f08..bf34c93e7 100644
--- a/go.mod
+++ b/go.mod
@@ -47,7 +47,7 @@ require (
 
 require (
 	github.com/bufbuild/buf v1.47.2
-	github.com/creachadair/atomicfile v0.2.6
+	github.com/creachadair/atomicfile v0.3.6
 	github.com/creachadair/taskgroup v0.13.2
 	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 5ab397bfa..f772b96d3 100644
--- a/go.sum
+++ b/go.sum
@@ -200,8 +200,10 @@ github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1
 github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/cpuguy83/go-md2man/v2 v2.0.5 h1:ZtcqGrnekaHpVLArFSe4HK5DoKx1T0rq2DwVB0alcyc=
 github.com/cpuguy83/go-md2man/v2 v2.0.5/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 v0.3.6 h1:BcXSDRq7waImZhKflqnTJjf+02CLi0W2Exlb2lyZ2yE=
+github.com/creachadair/atomicfile v0.3.6/go.mod h1:iaBMVDkRBQTIGzbYGCTS+gXeZPidWAeVbthIxSbEphE=
+github.com/creachadair/mds v0.21.4 h1:osKuLbjkV7YswBnhuTJh1lCDkqZMQnNfFVn0j8wLpz8=
+github.com/creachadair/mds v0.21.4/go.mod h1:1ltMWZd9yXhaHEoZwBialMaviWVUpRPvMwVP7saFAzM=
 github.com/creachadair/taskgroup v0.13.2 h1:3KyqakBuFsm3KkXi/9XIb0QcA8tEzLHLgaoidf0MdVc=
 github.com/creachadair/taskgroup v0.13.2/go.mod h1:i3V1Zx7H8RjwljUEeUWYT30Lmb9poewSb2XI1yTwD0g=
 github.com/creachadair/tomledit v0.0.23 h1:ohYJjMsxwzj4dDzKaBWFbWH5J+3LO/8CYnlVY+baBWA=