diff --git a/changes/20250820111138.bugfix b/changes/20250820111138.bugfix
new file mode 100644
index 0000000000..59b717492f
--- /dev/null
+++ b/changes/20250820111138.bugfix
@@ -0,0 +1 @@
+Dependency upgrade: timberjack-1.3.5
diff --git a/utils/go.mod b/utils/go.mod
index fd543670c2..8e90948736 100644
--- a/utils/go.mod
+++ b/utils/go.mod
@@ -5,7 +5,7 @@ go 1.23.0
 toolchain go1.24.1
 
 require (
-	github.com/DeRuina/timberjack v1.3.4
+	github.com/DeRuina/timberjack v1.3.5
 	github.com/OneOfOne/xxhash v1.2.8
 	github.com/avast/retry-go/v4 v4.6.1
 	github.com/bmatcuk/doublestar/v3 v3.0.0
diff --git a/utils/go.sum b/utils/go.sum
index 04d75ff7b7..a3f2fa5b43 100644
--- a/utils/go.sum
+++ b/utils/go.sum
@@ -4,8 +4,8 @@ bitbucket.org/creachadair/stringset v0.0.9/go.mod h1:t+4WcQ4+PXTa8aQdNKe40ZP6iwe
 dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
 dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/DeRuina/timberjack v1.3.4 h1:37Pz3M3zqIMJ8Hms6enslvcPcuGodd0XYv8fclni7uY=
-github.com/DeRuina/timberjack v1.3.4/go.mod h1:pbNOvT1AIUxBqiH/ytL9nNsKrHUrDGJdz7T23y79RRU=
+github.com/DeRuina/timberjack v1.3.5 h1:a8QrIyFCmnx6sjqmroFTIXcmNcen69dlx8DBRmN8+qU=
+github.com/DeRuina/timberjack v1.3.5/go.mod h1:oir/YwhAK3URX7u4CDuMzdVQtLQqc1l3M/vJ6WBsjZs=
 github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=