diff --git a/srcpkgs/qt5-webengine/patches/fix-libxml2-2.12.patch b/srcpkgs/qt5-webengine/patches/fix-libxml2-2.12.patch
new file mode 100644
index 00000000000..f85ee4d01ff
--- /dev/null
+++ b/srcpkgs/qt5-webengine/patches/fix-libxml2-2.12.patch
@@ -0,0 +1,34 @@
+Based on: https://github.com/chromium/chromium/commit/871f8ae9b65ce2679b0bc0be36902d65edf0c1e4
+
+diff --git a/third_party/blink/renderer/core/xml/xslt_processor.h b/third_party/blink/renderer/core/xml/xslt_processor.h
+index d53835e9675793e..2eaea31ed29b90f 100644
+--- a/src/3rdparty/chromium/third_party/blink/renderer/core/xml/xslt_processor.h
++++ b/src/3rdparty/chromium/third_party/blink/renderer/core/xml/xslt_processor.h
+@@ -79,7 +79,11 @@ class XSLTProcessor final : public Scrip
+ 
+   void reset();
+ 
++#if LIBXML_VERSION >= 21200
++  static void ParseErrorFunc(void* user_data, const xmlError*);
++#else
+   static void ParseErrorFunc(void* user_data, xmlError*);
++#endif
+   static void GenericErrorFunc(void* user_data, const char* msg, ...);
+ 
+   // Only for libXSLT callbacks
+diff --git a/third_party/blink/renderer/core/xml/xslt_processor_libxslt.cc b/third_party/blink/renderer/core/xml/xslt_processor_libxslt.cc
+index 133e0b3355d2f09..f424077089da87d 100644
+--- a/src/3rdparty/chromium/third_party/blink/renderer/core/xml/xslt_processor_libxslt.cc
++++ b/src/3rdparty/chromium/third_party/blink/renderer/core/xml/xslt_processor_libxslt.cc
+@@ -60,7 +60,11 @@ void XSLTProcessor::GenericErrorFunc(voi
+   // It would be nice to do something with this error message.
+ }
+ 
++#if LIBXML_VERSION >= 21200
++void XSLTProcessor::ParseErrorFunc(void* user_data, const xmlError* error) {
++#else
+ void XSLTProcessor::ParseErrorFunc(void* user_data, xmlError* error) {
++#endif
+   FrameConsole* console = static_cast<FrameConsole*>(user_data);
+   if (!console)
+     return;