diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9710af4..493bdc43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,23 @@
 All notable changes to `plotjuggler_sdk` are recorded here. Versioning policy is in
 [`CLAUDE.md`](./CLAUDE.md) → "Release Versioning".
 
+## [0.23.1]
+
+### Fix: Conan `plugin_host` component links the parser-module host (PATCH)
+
+The Conan recipe's `plugin_host` component omitted `pj_parser_module_host` and
+`pj_parser_claim_catalog`, both part of the `plotjuggler_sdk::plugin_host`
+umbrella since 0.22.0, so Conan consumers of the host umbrella could not link
+the claim catalog, route resolver, or native parser-module loader. The recipe
+also gains the `parser_module` component and ships `PjParserModule.cmake` as a
+build module, so `find_package(plotjuggler_sdk COMPONENTS parser_module)` and
+`pj_add_parser_module()` work from the Conan package exactly as from the
+installed CMake package. No header, ABI, or behavior change.
+
+Also silences a GCC 15 `-Wfree-nonheap-object` false positive in
+`parser_module_abi.cpp` that made every `-O3 -Werror` (Release package) build
+fail on that compiler; Debug and `-O2` builds were unaffected.
+
 ## [0.23.0]
 
 ### Fix: entry-point symbol provenance and modern platform loaders (MINOR)
diff --git a/VERSION b/VERSION
index ca222b7c..610e2872 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.23.0
+0.23.1
diff --git a/conanfile.py b/conanfile.py
index 871d76ea..867e5492 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -147,6 +147,7 @@ def package_info(self):
         # CMakeDeps actually include()s it after find_package() returns.
         self.cpp_info.set_property("cmake_build_modules", [
             os.path.join("lib", "cmake", "plotjuggler_sdk", "PjPluginManifest.cmake"),
+            os.path.join("lib", "cmake", "plotjuggler_sdk", "PjParserModule.cmake"),
         ])
 
         # --- base ---
@@ -162,16 +163,28 @@ def package_info(self):
         sdk.includedirs = ["include"]
         sdk.requires = ["base", "nlohmann_json::nlohmann_json"]
 
+        # --- parser_module (header-only functional parser-module authoring kit;
+        # pj_add_parser_module() comes from the PjParserModule build module) ---
+        kit = self.cpp_info.components["parser_module"]
+        kit.set_property("cmake_target_name", "plotjuggler_sdk::parser_module")
+        kit.libs = []  # INTERFACE only: authored modules link no SDK library
+        kit.includedirs = ["include"]
+
         # --- plugin_host (umbrella linking every host-side loader) ---
         if self.options.with_host:
             host = self.cpp_info.components["plugin_host"]
             host.set_property("cmake_target_name", "plotjuggler_sdk::plugin_host")
+            # Static archives: dependents before their dependencies. The
+            # parser-module host and claim catalog joined the umbrella in 0.22
+            # (they were missing from this list until 0.23.1).
             host.libs = [
                 "pj_data_source_host",
                 "pj_message_parser_host",
                 "pj_toolbox_host",
                 "pj_dialog_library",
                 "pj_plugin_catalog",
+                "pj_parser_module_host",
+                "pj_parser_claim_catalog",
                 "pj_plugin_loader_detail",
             ]
             host.includedirs = ["include"]
diff --git a/pj_base/src/parser_module_abi.cpp b/pj_base/src/parser_module_abi.cpp
index 73734c2a..c4cce005 100644
--- a/pj_base/src/parser_module_abi.cpp
+++ b/pj_base/src/parser_module_abi.cpp
@@ -46,6 +46,16 @@ Expected<T> malformed(std::string message) {
   return true;
 }
 
+// GCC 15 at -O3 reports a -Wfree-nonheap-object false positive when
+// std::vector<uint8_t>::push_back's reallocation path is inlined into the
+// little-endian writer below (the freed pointer is the vector's own heap
+// block). Debug and -O2 builds are clean, so this only surfaced in Release
+// package builds. Clang has no such warning group.
+#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ >= 15
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfree-nonheap-object"
+#endif
+
 class ByteWriter {
  public:
   explicit ByteWriter(size_t reserve) {
@@ -588,4 +598,8 @@ Expected<OutputDescriptorV1> readOutputDescriptorV1(Span<const uint8_t> bytes) {
   return OutputDescriptorV1(std::move(scalar));
 }
 
+#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ >= 15
+#pragma GCC diagnostic pop
+#endif
+
 }  // namespace PJ::parser_module