diff --git a/browser_patches/checkout_build_archive_upload.sh b/browser_patches/checkout_build_archive_upload.sh
index a54bc60534..e55e21ee6b 100755
--- a/browser_patches/checkout_build_archive_upload.sh
+++ b/browser_patches/checkout_build_archive_upload.sh
@@ -115,7 +115,7 @@ if [[ -f $ZIP_PATH ]]; then
 fi
 trap "rm -rf ${ZIP_PATH}; rm -rf ${LOG_PATH}; cd $(pwd -P);" INT TERM EXIT
 cd "$(dirname "$0")"
-BUILD_NUMBER=$(cat ./$BROWSER_NAME/BUILD_NUMBER)
+BUILD_NUMBER=$(head -1 ./$BROWSER_NAME/BUILD_NUMBER)
 BUILD_BLOB_PATH="${BROWSER_NAME}/${BUILD_NUMBER}/${BUILD_BLOB_NAME}"
 LOG_BLOB_NAME="${BUILD_BLOB_NAME%.zip}.log.gz"
 LOG_BLOB_PATH="${BROWSER_NAME}/${BUILD_NUMBER}/${LOG_BLOB_NAME}"
diff --git a/browser_patches/download.sh b/browser_patches/download.sh
index c45be6a847..a1d6d5efb3 100755
--- a/browser_patches/download.sh
+++ b/browser_patches/download.sh
@@ -42,7 +42,7 @@ else
   exit 1
 fi
 
-BUILD_NUMBER=$(cat ./$BROWSER_NAME/BUILD_NUMBER)
+BUILD_NUMBER=$(head -1 ./$BROWSER_NAME/BUILD_NUMBER)
 BLOB_PATH="$BROWSER_NAME/$BUILD_NUMBER/$BLOB_NAME"
 
 if [[ $# < 2 ]]; then
diff --git a/browser_patches/export.sh b/browser_patches/export.sh
index 4f014344fe..03554ed2ca 100755
--- a/browser_patches/export.sh
+++ b/browser_patches/export.sh
@@ -119,7 +119,7 @@ NEW_BASE_REVISION=$(git merge-base $REMOTE_BROWSER_UPSTREAM/$BASE_BRANCH $CURREN
 NEW_DIFF=$(git diff --diff-algorithm=myers --full-index $NEW_BASE_REVISION $CURRENT_BRANCH -- . ":!${EXTRA_FOLDER_CHECKOUT_RELPATH}")
 
 # Increment BUILD_NUMBER
-BUILD_NUMBER=$(curl ${BUILD_NUMBER_UPSTREAM_URL})
+BUILD_NUMBER=$(curl ${BUILD_NUMBER_UPSTREAM_URL} | head -1)
 BUILD_NUMBER=$((BUILD_NUMBER+1))
 
 echo "REMOTE_URL=\"$REMOTE_URL\"
@@ -127,6 +127,7 @@ BASE_BRANCH=\"$BASE_BRANCH\"
 BASE_REVISION=\"$NEW_BASE_REVISION\"" > $EXPORT_PATH/UPSTREAM_CONFIG.sh
 echo "$NEW_DIFF" > $EXPORT_PATH/patches/$PATCH_NAME
 echo $BUILD_NUMBER > $EXPORT_PATH/BUILD_NUMBER
+echo "Changed: $(git config user.email) $(date)" >> $EXPORT_PATH/BUILD_NUMBER
 
 echo "-- exporting standalone folder"
 rm -rf "${EXTRA_FOLDER_PW_PATH}"
diff --git a/browser_patches/firefox/BUILD_NUMBER b/browser_patches/firefox/BUILD_NUMBER
index b1e1a0c008..a1e1f0548c 100644
--- a/browser_patches/firefox/BUILD_NUMBER
+++ b/browser_patches/firefox/BUILD_NUMBER
@@ -1 +1,2 @@
-1120
+1121
+Changed: lushnikov@chromium.org Wed Jul  2 12:02:52 PDT 2020
diff --git a/browser_patches/prepare_checkout.sh b/browser_patches/prepare_checkout.sh
index 1eadbcce39..f5e42c7af7 100755
--- a/browser_patches/prepare_checkout.sh
+++ b/browser_patches/prepare_checkout.sh
@@ -38,14 +38,14 @@ if [[ ("$1" == "firefox") || ("$1" == "firefox/") || ("$1" == "ff") ]]; then
   CHECKOUT_PATH="$PWD/firefox/checkout"
   PATCHES_PATH="$PWD/firefox/patches"
   FIREFOX_EXTRA_FOLDER_PATH="$PWD/firefox/juggler"
-  BUILD_NUMBER=$(cat "$PWD/firefox/BUILD_NUMBER")
+  BUILD_NUMBER=$(head -1 "$PWD/firefox/BUILD_NUMBER")
   source "./firefox/UPSTREAM_CONFIG.sh"
 elif [[ ("$1" == "webkit") || ("$1" == "webkit/") || ("$1" == "wk") ]]; then
   FRIENDLY_CHECKOUT_PATH="//browser_patches/webkit/checkout";
   CHECKOUT_PATH="$PWD/webkit/checkout"
   PATCHES_PATH="$PWD/webkit/patches"
   WEBKIT_EXTRA_FOLDER_PATH="$PWD/webkit/embedder/Playwright"
-  BUILD_NUMBER=$(cat "$PWD/webkit/BUILD_NUMBER")
+  BUILD_NUMBER=$(head -1 "$PWD/webkit/BUILD_NUMBER")
   source "./webkit/UPSTREAM_CONFIG.sh"
 else
   echo ERROR: unknown browser - "$1"
diff --git a/browser_patches/tools/check_cdn.sh b/browser_patches/tools/check_cdn.sh
index 85e6450326..963fee6f22 100755
--- a/browser_patches/tools/check_cdn.sh
+++ b/browser_patches/tools/check_cdn.sh
@@ -21,7 +21,7 @@ cd "$(dirname "$0")"
 
 HOST="https://playwright2.blob.core.windows.net/builds"
 
-FFOX_REVISION=$(cat ../firefox/BUILD_NUMBER)
+FFOX_REVISION=$(head -1 ../firefox/BUILD_NUMBER)
 FFOX_ARCHIVES=(
   "$HOST/firefox/%s/firefox-mac.zip"
   "$HOST/firefox/%s/firefox-linux.zip"
@@ -35,7 +35,7 @@ FFOX_ALIASES=(
   "FF-WIN64"
 )
 
-WK_REVISION=$(cat ../webkit/BUILD_NUMBER)
+WK_REVISION=$(head -1 ../webkit/BUILD_NUMBER)
 WK_ARCHIVES=(
   "$HOST/webkit/%s/minibrowser-gtk.zip"
   "$HOST/webkit/%s/minibrowser-wpe.zip"
diff --git a/browser_patches/webkit/BUILD_NUMBER b/browser_patches/webkit/BUILD_NUMBER
index e17bc24388..635c89c1cc 100644
--- a/browser_patches/webkit/BUILD_NUMBER
+++ b/browser_patches/webkit/BUILD_NUMBER
@@ -1 +1,2 @@
-1299
+1300
+Changed: lushnikov@chromium.org Wed Jul  2 12:02:52 PDT 2020