From 30b1edd58770d48285035b51c74ba049147aeab9 Mon Sep 17 00:00:00 2001
From: Uwe Klotz <klotz@hmi-project.com>
Date: Sat, 31 Oct 2026 23:55:09 +0100
Subject: [PATCH 1/2] Upgrade to open62541 v1.5.10

---
 CHANGELOG.md | 5 +++++
 open62541    | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5570be..8dc0af1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Changed
+
+- Upgrade to open62541 version
+  [1.5.10](https://github.com/open62541/open62541/releases/tag/v1.5.10).
+
 ### Fixed
 
 - Fix build on Ubuntu 26.04.
diff --git a/open62541 b/open62541
index 05c2b38..93c3bdf 160000
--- a/open62541
+++ b/open62541
@@ -1 +1 @@
-Subproject commit 05c2b389b65cc35884eb40d800301af1f3d130cf
+Subproject commit 93c3bdfc9ea4718b503c6cbf57876237addd0f2c

From 354f6a63464e15d712c52d91bec80d27d91d6576 Mon Sep 17 00:00:00 2001
From: Uwe Klotz <klotz@hmi-project.com>
Date: Sun, 1 Nov 2026 00:07:33 +0100
Subject: [PATCH 2/2] Fix link error on Windows

---
 build.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/build.rs b/build.rs
index b2f7503..852ecbf 100644
--- a/build.rs
+++ b/build.rs
@@ -90,6 +90,12 @@ fn main() {
     println!("cargo:rustc-link-search={}", dst_lib.display());
     println!("cargo:rustc-link-lib={LIB_BASE}");
 
+    if matches!(env::var("CARGO_CFG_TARGET_OS"), Ok(os) if os == "windows") {
+        // `UA_random_secureBytes()` uses `BCryptGenRandom()` on Windows, regardless of whether
+        // encryption is enabled.
+        println!("cargo:rustc-link-lib=bcrypt");
+    }
+
     // For encryption support enabled, we add the libraries that have to be used as dependencies for
     // the final build artifact.
     //