diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index c41ba4c..b7e98b3 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -31,6 +31,15 @@ name: Build
 
 on:
   push:
+    # Excludes tag pushes -- a bare `push:` matches every ref push, tags
+    # included, which meant tagging a release triggered THIS workflow's full
+    # 3-platform build (Windows and all) at the same time as
+    # release.yml's own -- two full Windows builds serialized behind the
+    # runner's capacity:1, for one tag push. release.yml already covers
+    # exactly this build (plus packaging) on every `v*` tag; this workflow's
+    # job is ordinary commits.
+    branches:
+      - "**"
   pull_request:
 
 jobs: