diff --git a/.github/workflows/check-mkdocs-task.yml b/.github/workflows/check-mkdocs-task.yml
index 92c1150..7d1b69e 100644
--- a/.github/workflows/check-mkdocs-task.yml
+++ b/.github/workflows/check-mkdocs-task.yml
@@ -34,6 +34,9 @@ on:
       - "docs/**"
       - "docsgen/**"
       - "**.go"
+  schedule:
+    # Run periodically to catch breakage caused by external changes.
+    - cron: "0 5 * * WED"
   workflow_dispatch:
   repository_dispatch:
 
diff --git a/.github/workflows/check-prettier-formatting-task.yml b/.github/workflows/check-prettier-formatting-task.yml
index daa8d26..4bda6c1 100644
--- a/.github/workflows/check-prettier-formatting-task.yml
+++ b/.github/workflows/check-prettier-formatting-task.yml
@@ -200,6 +200,9 @@ on:
       - "**.rviz"
       - "**.sublime-syntax"
       - "**.syntax"
+  schedule:
+    # Run periodically to catch breakage caused by external changes.
+    - cron: "0 4 * * WED"
   workflow_dispatch:
   repository_dispatch:
 
diff --git a/.github/workflows/test-go-task.yml b/.github/workflows/test-go-task.yml
index 99097d0..d66922e 100644
--- a/.github/workflows/test-go-task.yml
+++ b/.github/workflows/test-go-task.yml
@@ -30,6 +30,9 @@ on:
       - "Taskfile.ya?ml"
       - "**.go"
       - "**/testdata/**"
+  schedule:
+    # Run periodically to catch breakage caused by external changes.
+    - cron: "0 11 * * WED"
   workflow_dispatch:
   repository_dispatch: