diff --git a/.changeset/smart-actors-refuse.md b/.changeset/smart-actors-refuse.md
new file mode 100644
index 0000000000..2a8a688d3e
--- /dev/null
+++ b/.changeset/smart-actors-refuse.md
@@ -0,0 +1,5 @@
+---
+"@latticexyz/gas-report": minor
+---
+
+Now uses `--isolate` flag in `forge test` for more accurate gas measurement.
diff --git a/packages/gas-report/README.md b/packages/gas-report/README.md
index 782f3b3a11..f6adb34a47 100644
--- a/packages/gas-report/README.md
+++ b/packages/gas-report/README.md
@@ -26,7 +26,7 @@ pnpm gas-report --save gas-report.json
 Or, if you have your own test command, you can pipe the output to `gas-report --stdin`:
 
 ```console
-GAS_REPORTER_ENABLED=true forge test -vvv | pnpm gas-report --stdin
+GAS_REPORTER_ENABLED=true forge test -vvv --isolate | pnpm gas-report --stdin
 ```
 
 Run `pnpm gas-report --help` for more details.