diff --git a/CHANGELOG.md b/CHANGELOG.md
index 218f9c7..28400a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,4 +22,7 @@
 # 76.0.3809.87-1
 * Add WebView builds
 * Since `aapt` no longer works, bundled `aapt2` will be used until a rebuild of SDK 29 exists
-* Minor bug fixes
\ No newline at end of file
+* Minor bug fixes
+
+# 76.0.3809.100-1
+* Change default setting of contextual search to false
\ No newline at end of file
diff --git a/android_flags.gn b/android_flags.gn
index 21b2b6d..0a33a05 100644
--- a/android_flags.gn
+++ b/android_flags.gn
@@ -14,6 +14,7 @@ enable_resource_whitelist_generation=false
 ffmpeg_branding="Chrome"
 is_clang=true
 is_component_build=false
+rtc_build_examples=false
 target_os="android"
 target_cpu="arm64"
 use_jumbo_build=true
diff --git a/android_flags.release.gn b/android_flags.release.gn
new file mode 100644
index 0000000..cb97f48
--- /dev/null
+++ b/android_flags.release.gn
@@ -0,0 +1,7 @@
+blink_symbol_level=0
+enable_ac3_eac3_audio_demuxing=true
+enable_iterator_debugging=false
+fatal_linker_warnings=false
+is_debug=false
+is_official_build=true
+symbol_level=0
\ No newline at end of file
diff --git a/build.sh b/build.sh
index 32f8e78..525ea59 100755
--- a/build.sh
+++ b/build.sh
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 set -eux -o pipefail
 
-chromium_version=76.0.3809.87
+chromium_version=76.0.3809.100
 target=monochrome_public_apk
-#target=system_webview_apk
+webview_target=system_webview_apk
 
 # Required tools: python2, python3, ninja, git, clang, lld, llvm, curl
 # Assuming default python to be python2. This is true on most Linux distributions.
@@ -20,7 +20,7 @@ mkdir -p depot_tools
 pushd depot_tools
 git init
 git remote add origin https://chromium.googlesource.com/chromium/tools/depot_tools.git
-git fetch --depth 1 --no-tags origin ${depot_tools_commit}
+git fetch --depth 1 --no-tags origin "${depot_tools_commit}"
 git reset --hard FETCH_HEAD
 popd
 export PATH="$(pwd -P)/depot_tools:$PATH"
@@ -37,7 +37,7 @@ mkdir src/third_party/feed/src
 pushd src/third_party/feed/src
 git init
 git remote add origin https://chromium.googlesource.com/feed
-git fetch --depth 1 --no-tags origin ${feed_commit}
+git fetch --depth 1 --no-tags origin "${feed_commit}"
 git reset --hard FETCH_HEAD
 popd
 
@@ -46,7 +46,7 @@ mkdir src/third_party/webrtc
 pushd src/third_party/webrtc
 git init
 git remote add origin https://webrtc.googlesource.com/src.git
-git fetch --depth 1 --no-tags origin ${webrtc_commit}
+git fetch --depth 1 --no-tags origin "${webrtc_commit}"
 git reset --hard FETCH_HEAD
 popd
 
@@ -55,7 +55,7 @@ mkdir src/third_party/libsync/src
 pushd src/third_party/libsync/src
 git init
 git remote add origin https://chromium.googlesource.com/aosp/platform/system/core/libsync.git
-git fetch --depth 1 --no-tags origin ${libsync_commit}
+git fetch --depth 1 --no-tags origin "${libsync_commit}"
 git reset --hard FETCH_HEAD
 popd
 
@@ -186,7 +186,7 @@ popd
 ## Configure output folder
 cd src
 mkdir -p out/Default
-cat ../ungoogled-chromium/flags.gn ../android_flags.gn > out/Default/args.gn
+cat ../ungoogled-chromium/flags.gn ../android_flags.gn ../android_flags.release.gn > out/Default/args.gn
 tools/gn/out/gn gen out/Default --fail-on-unused-args
 
 
@@ -198,3 +198,4 @@ export CXX=${CXX:=clang++}
 
 ## Build
 ninja -C out/Default ${target}
+ninja -C out/Default ${webview_target}
diff --git a/misc/android_studio_setup.sh b/misc/android_studio_setup.sh
index 7840c77..dfa7326 100755
--- a/misc/android_studio_setup.sh
+++ b/misc/android_studio_setup.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eux -o pipefail
 
-chromium_version=76.0.3809.87
+chromium_version=76.0.3809.100
 target=monochrome_public_apk
 
 # Create symbol links to gn, depot-tools
diff --git a/patches/series b/patches/series
index c8d98a4..fa1b358 100644
--- a/patches/series
+++ b/patches/series
@@ -14,4 +14,5 @@ ungoogled-chromium-android/remove-gms-vision-clearcut-phenotype.patch
 ungoogled-chromium-android/remove-gms-flags-places-stats.patch
 ungoogled-chromium-android/remove-gms-base-tasks.patch
 ungoogled-chromium-android/remove-play-core.patch
-ungoogled-chromium-android/uncheck-fre-send-report.patch
\ No newline at end of file
+ungoogled-chromium-android/uncheck-fre-send-report.patch
+ungoogled-chromium-android/disable-context-search-by-default.patch
\ No newline at end of file
diff --git a/patches/ungoogled-chromium-android/disable-context-search-by-default.patch b/patches/ungoogled-chromium-android/disable-context-search-by-default.patch
new file mode 100644
index 0000000..035d3f3
--- /dev/null
+++ b/patches/ungoogled-chromium-android/disable-context-search-by-default.patch
@@ -0,0 +1,19 @@
+description: disable contextual search in preference by default
+author: Wengling Chen <feiyu2817@gmail.com>
+
+---
+ .../src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java  | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
+--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
++++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
+@@ -419,7 +419,7 @@ public class PrefServiceBridge {
+      * @return Whether the Contextual Search feature was disabled by the user explicitly.
+      */
+     public boolean isContextualSearchDisabled() {
+-        return getContextualSearchPreference().equals(CONTEXTUAL_SEARCH_DISABLED);
++        return !getContextualSearchPreference().equals(CONTEXTUAL_SEARCH_ENABLED);
+     }
+ 
+     /**