diff --git a/ENVOY_VERSION b/ENVOY_VERSION
new file mode 100644
index 0000000..0411837
--- /dev/null
+++ b/ENVOY_VERSION
@@ -0,0 +1 @@
+80c1ac2143a7a73932c9dff814d38fd6867fe691
\ No newline at end of file
diff --git a/README.md b/README.md
index 8f6ed67..47236a4 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,17 @@ curl localhost:1062/uuid
 
 to make sure the (passthrough) filter is working.
 
-[78efd97]: https://github.com/envoyproxy/envoy/tree/80c1ac2143a7a73932c9dff814d38fd6867fe691
+
+## Update Envoy Version
+
+To update the Envoy version used in this repository, execute the following command:
+
+```
+CURRENT_VERSION="$(cat ENVOY_VERSION)"
+NEW_VERSION=80c1ac2143a7a73932c9dff814d38fd6867fe691 # Whatever the head commit in envoyproxy/envoy repo.
+grep -rlF "${CURRENT_VERSION}" . | xargs sed -i "s/${CURRENT_VERSION}/${NEW_VERSION}/g"
+```
+
+[80c1ac2143a7a73932c9dff814d38fd6867fe691]: https://github.com/envoyproxy/envoy/tree/80c1ac2143a7a73932c9dff814d38fd6867fe691
 [Envoy]: https://github.com/envoyproxy/envoy
 [High Level Doc]: https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/advanced/dynamic_modules
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 2910622..9d18895 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "aho-corasick"
@@ -84,7 +84,7 @@ checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 [[package]]
 name = "envoy-proxy-dynamic-modules-rust-sdk"
 version = "0.1.0"
-source = "git+https://github.com/envoyproxy/envoy?rev=78efd97#78efd979f9e33a128efffc015ccba39df5481563"
+source = "git+https://github.com/envoyproxy/envoy?rev=80c1ac2143a7a73932c9dff814d38fd6867fe691#80c1ac2143a7a73932c9dff814d38fd6867fe691"
 dependencies = [
  "bindgen",
  "mockall",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 3efbb54..2f703e9 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -8,7 +8,7 @@ repository = "https://github.com/envoyproxy/dynamic-modules-example"
 
 [dependencies]
 # The SDK version must match the Envoy version due to the strict compatibility requirements.
-envoy-proxy-dynamic-modules-rust-sdk = { git = "https://github.com/envoyproxy/envoy", rev = "78efd97" }
+envoy-proxy-dynamic-modules-rust-sdk = { git = "https://github.com/envoyproxy/envoy", rev = "80c1ac2143a7a73932c9dff814d38fd6867fe691" }
 
 [lib]
 name = "rust_module"