diff --git a/CHANGELOG.md b/CHANGELOG.md
index c947849..fe37dfc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ### Bugfixes
 
+#### Use PGO on weekly builds
+
+Since 2.0.0, PGO was not being used on weekly builds. This is now fixed.
+
 #### No warmup runs for pystats
 
 When collecting pystats, pyperformance will no longer perform "warmup runs", to
diff --git a/bench_runner/scripts/install.py b/bench_runner/scripts/install.py
index f2e1a37..3e78e7f 100644
--- a/bench_runner/scripts/install.py
+++ b/bench_runner/scripts/install.py
@@ -271,6 +271,7 @@ def generate__weekly(dst: Any) -> Any:
                     "ref": "${{ needs.determine_head.outputs.commit }}",
                     "machine": runner.name,
                     "benchmarks": "all_and_excluded",
+                    "pgo": True,
                     **flags.flags_to_gha_variables_yml(weekly_cfg.flags),
                 },
                 "secrets": "inherit",