diff --git a/.changeset/serious-rivers-attend.md b/.changeset/serious-rivers-attend.md
new file mode 100644
index 00000000000..8946e84cb72
--- /dev/null
+++ b/.changeset/serious-rivers-attend.md
@@ -0,0 +1,5 @@
+---
+"@firebase/webchannel-wrapper": patch
+---
+
+fix: Update webchannel-wrapper to fix webchannel multi-byte character decoding bug in fetch streams.
diff --git a/packages/webchannel-wrapper/package.json b/packages/webchannel-wrapper/package.json
index ad2a8df0bdb..ce1eced19bd 100644
--- a/packages/webchannel-wrapper/package.json
+++ b/packages/webchannel-wrapper/package.json
@@ -32,7 +32,7 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "closure-net": "git+https://github.com/google/closure-net.git#9844d60",
+    "closure-net": "git+https://github.com/google/closure-net.git#0412666",
     "@rollup/plugin-commonjs": "21.1.0",
     "rollup": "2.79.1",
     "rollup-plugin-copy": "3.5.0",
diff --git a/yarn.lock b/yarn.lock
index dead03b0c38..f8df951e815 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5883,9 +5883,9 @@ cloneable-readable@^1.0.0:
     process-nextick-args "^2.0.0"
     readable-stream "^2.3.5"
 
-"closure-net@git+https://github.com/google/closure-net.git#9844d60":
+"closure-net@git+https://github.com/google/closure-net.git#0412666":
   version "0.0.0"
-  resolved "git+https://github.com/google/closure-net.git#9844d605191623eaba4b184775610fe875e78ac4"
+  resolved "git+https://github.com/google/closure-net.git#0412666e8f29b8ae69decb1fdc7ead635a5cf43e"
 
 cmd-shim@^4.1.0:
   version "4.1.0"