diff --git a/zvariant/fuzz/Cargo.lock b/zvariant/fuzz/Cargo.lock
index abae7c551..468f00f72 100644
--- a/zvariant/fuzz/Cargo.lock
+++ b/zvariant/fuzz/Cargo.lock
@@ -33,9 +33,9 @@ checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
 [[package]]
 name = "hashbrown"
-version = "0.15.0"
+version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 
 [[package]]
 name = "indexmap"
@@ -176,20 +176,20 @@ dependencies = [
 
 [[package]]
 name = "winnow"
-version = "0.7.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59690dea168f2198d1a3b0cac23b8063efcd11012f10ae4698f284808c8ef603"
+checksum = "0592e1c9d151f854e6fd382574c3a0855250e1d9b2f99d9281c6e6391af352f1"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
 name = "zvariant"
-version = "5.9.2"
+version = "5.12.0"
 dependencies = [
  "endi",
  "serde",
- "winnow 0.7.2",
+ "winnow 1.0.3",
  "zvariant_derive",
  "zvariant_utils",
 ]
@@ -205,7 +205,7 @@ dependencies = [
 
 [[package]]
 name = "zvariant_derive"
-version = "5.9.2"
+version = "5.12.0"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -216,11 +216,11 @@ dependencies = [
 
 [[package]]
 name = "zvariant_utils"
-version = "3.3.0"
+version = "3.4.0"
 dependencies = [
  "proc-macro2",
  "quote",
  "serde",
  "syn",
- "winnow 0.7.2",
+ "winnow 1.0.3",
 ]