diff --git a/build/patches/Disable-ua-full-version.patch b/build/patches/Disable-ua-full-version.patch
new file mode 100644
index 00000000..bb944498
--- /dev/null
+++ b/build/patches/Disable-ua-full-version.patch
@@ -0,0 +1,58 @@
+From: uazo <uazo@users.noreply.github.com>
+Date: Wed, 16 Feb 2022 14:28:58 +0000
+Subject: Disable ua full version in getHighEntropyValues()
+
+getHighEntropyValues returns only the major version
+---
+ .../renderer/core/frame/navigator_ua_data.cc     | 16 ++++++++++++++--
+ 1 file changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/third_party/blink/renderer/core/frame/navigator_ua_data.cc b/third_party/blink/renderer/core/frame/navigator_ua_data.cc
+--- a/third_party/blink/renderer/core/frame/navigator_ua_data.cc
++++ b/third_party/blink/renderer/core/frame/navigator_ua_data.cc
+@@ -6,6 +6,8 @@
+ 
+ #include "base/compiler_specific.h"
+ #include "base/task/single_thread_task_runner.h"
++#include "base/version.h"
++#include "base/strings/strcat.h"
+ #include "third_party/blink/public/common/privacy_budget/identifiability_metric_builder.h"
+ #include "third_party/blink/public/common/privacy_budget/identifiability_study_settings.h"
+ #include "third_party/blink/public/common/privacy_budget/identifiable_surface.h"
+@@ -37,6 +39,16 @@ void MaybeRecordMetric(bool record_identifiability,
+       .Record(execution_context->UkmRecorder());
+ }
+ 
++const String GetReducedVersionNumber(const std::string& fullVersion) {
++  base::Version version(fullVersion);
++  std::string version_str;
++  const std::vector<uint32_t>& components = version.components();
++  if (components.size() > 0) {
++    version_str = base::StrCat({base::NumberToString(components[0]), ".0.0.0"});
++  }
++  return String::FromUTF8(version_str);
++}
++
+ }  // namespace
+ 
+ NavigatorUAData::NavigatorUAData(ExecutionContext* context)
+@@ -75,7 +87,7 @@ void NavigatorUAData::SetFullVersionList(
+     const UserAgentBrandList& full_version_list) {
+   for (const auto& brand_version : full_version_list) {
+     AddBrandFullVersion(String::FromUTF8(brand_version.brand),
+-                        String::FromUTF8(brand_version.version));
++        GetReducedVersionNumber(brand_version.version));
+   }
+ }
+ 
+@@ -97,7 +109,7 @@ void NavigatorUAData::SetModel(const String& model) {
+ }
+ 
+ void NavigatorUAData::SetUAFullVersion(const String& ua_full_version) {
+-  ua_full_version_ = ua_full_version;
++  ua_full_version_ = GetReducedVersionNumber(ua_full_version.Ascii());
+ }
+ 
+ void NavigatorUAData::SetBitness(const String& bitness) {
+--
+2.25.1