diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index dea9c104092561ebd4690eb7c96e35d47d9d9ba9..b3af98f3f4aec49a7b1efaad23c512cb89f45163 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,7 +22,7 @@ jobs:
         with:
           script: |
             const fs = require('fs');
-            const body = fs.readFileSync('perf.txt', 'utf8');
+            const body = fs.readFileSync('build-new/perf.txt', 'utf8');
             github.rest.issues.createComment({
               issue_number: context.issue.number,
               owner: context.repo.owner,
diff --git a/ci/aarch64-linux-release.sh b/ci/aarch64-linux-release.sh
index 10ed300a37e61cd2a9ff507493e0add460394db8..54164a0df4b45396c815acdbd39e37db7eebc086 100644
--- a/ci/aarch64-linux-release.sh
+++ b/ci/aarch64-linux-release.sh
@@ -110,4 +110,4 @@ ninja install
 # After all correctness checking, compare performance against the merge-base.
 cd ..
 sh ci/measure-perf-delta.sh "$ZIG" "$TARGET" "$MCPU" "$PREFIX" || \
-  echo "Error occurred measuring the performance delta of this pull request." > perf.txt
+  echo "Error occurred measuring the performance delta of this pull request." > build-new/perf.txt
diff --git a/ci/measure-perf-delta.sh b/ci/measure-perf-delta.sh
index 064c4d8879ec804ae14f6172d988a538ccbd5f69..93a658162c73496a66dc65b155497d511e9dc9dc 100644
--- a/ci/measure-perf-delta.sh
+++ b/ci/measure-perf-delta.sh
@@ -39,5 +39,5 @@ cd ..
 
 poop \
   "build-base/stage3/bin/zig build-exe test/standalone/hello_world/hello.zig" \
-  "build-head/stage3/bin/zig build-exe test/standalone/hello_world/hello.zig" \
-  > perf.txt
+  "build-new/stage3/bin/zig build-exe test/standalone/hello_world/hello.zig" \
+  > build-new/perf.txt