diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 79bd8bdaa7..ffe5a25c4d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,6 @@ jobs:
     env:
       CARGO_INCREMENTAL: 0
       RUST_BACKTRACE: full
-      V8_BINARY: true
 
     steps:
       - name: Configure git
diff --git a/Cargo.lock b/Cargo.lock
index 932fbeeab0..ac62a931a2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2071,9 +2071,9 @@ dependencies = [
 
 [[package]]
 name = "rusty_v8"
-version = "0.3.8"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eebb25415f6eedee924beffe4386375adafeaa69694383139c77336e88d204c3"
+checksum = "fee528081d3eb7efe829a0021063df092a241837f3c063fb825bf7aa8858f80c"
 dependencies = [
  "bitflags",
  "cargo_gn",
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 07a8d70a0b..928c9a10b0 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -19,7 +19,7 @@ futures = { version = "0.3.4", features = ["thread-pool", "compat"] }
 lazy_static = "1.4.0"
 libc = "0.2.68"
 log = "0.4.8"
-rusty_v8 = "0.3.8"
+rusty_v8 = "0.3.9"
 serde_json = "1.0.48"
 url = "2.1.1"
 
diff --git a/std/manual.md b/std/manual.md
index b9f3371705..f073d15080 100644
--- a/std/manual.md
+++ b/std/manual.md
@@ -1512,13 +1512,13 @@ Extra steps for Windows users:
 The easiest way to build Deno is by using a precompiled version of V8:
 
 ```
-V8_BINARY=1 cargo build -vv
+cargo build -vv
 ```
 
 However if you want to build Deno and V8 from source code:
 
 ```
-cargo build -vv
+V8_FROM_SOURCE=1 cargo build -vv
 ```
 
 When building V8 from source, there are more dependencies: