diff --git a/images/port_manager/gluetun-port-mgr/Cargo.lock b/images/port_manager/gluetun-port-mgr/Cargo.lock
index 1fd130787..4af4e36ad 100644
--- a/images/port_manager/gluetun-port-mgr/Cargo.lock
+++ b/images/port_manager/gluetun-port-mgr/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "anyhow"
@@ -531,9 +531,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.126"
+version = "1.0.134"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3b863381a05ffefbc82571a2d893edf47b27fb0ebedbf582c39640e51abebef"
+checksum = "d00f4175c42ee48b15416f6193a959ba3a0d67fc699a0db9ad12df9f83991c7d"
 dependencies = [
  "itoa",
  "memchr",