diff --git a/.github/workflows/rust-release-windows.yml b/.github/workflows/rust-release-windows.yml
index 7a4843243..5e1edae17 100644
--- a/.github/workflows/rust-release-windows.yml
+++ b/.github/workflows/rust-release-windows.yml
@@ -24,7 +24,9 @@ jobs:
   build-windows-binaries:
     name: Build Windows binaries - ${{ matrix.runner }} - ${{ matrix.target }} - ${{ matrix.bundle }}
     runs-on: ${{ matrix.runs_on }}
-    timeout-minutes: 60
+    # Windows release builds can exceed an hour on fat-LTO mainline releases,
+    # so keep the timeout aligned with the top-level release build headroom.
+    timeout-minutes: 90
     permissions:
       contents: read
     defaults:
@@ -137,7 +139,7 @@ jobs:
       - build-windows-binaries
     name: Build - ${{ matrix.runner }} - ${{ matrix.target }}
     runs-on: ${{ matrix.runs_on }}
-    timeout-minutes: 60
+    timeout-minutes: 90
     permissions:
       contents: read
       id-token: write
diff --git a/.github/workflows/rust-release.yml b/.github/workflows/rust-release.yml
index d79ea9e99..073ba5821 100644
--- a/.github/workflows/rust-release.yml
+++ b/.github/workflows/rust-release.yml
@@ -49,9 +49,8 @@ jobs:
     needs: tag-check
     name: Build - ${{ matrix.runner }} - ${{ matrix.target }} - ${{ matrix.bundle }}
     runs-on: ${{ matrix.runs_on || matrix.runner }}
-    # Codex binaries can take a long time to build, particularly on Windows.
-    # Ideally, this would be 60 minutes, but let's add some headroom because
-    # having to restart a release build due to a timeout is a major pain.
+    # Release builds can take a long time, so leave some headroom to avoid
+    # having to restart the full workflow due to a timeout.
     timeout-minutes: 90
     permissions:
       contents: read