diff --git a/.github/workflows/asan.yaml b/.github/workflows/asan.yaml
index 0121d26..ca148dc 100644
--- a/.github/workflows/asan.yaml
+++ b/.github/workflows/asan.yaml
@@ -17,4 +17,7 @@ jobs:
         rmf_task
         rmf_task_sequence
       mixin: asan
-      repos-branch-override: lyrical
+      # The current version of rmf_task requires a newer version of
+      # nlohmann_json_schema_validator which is not available in the rmf.repos
+      # files of the older distros.
+      repos-branch-override: main
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index c4d246a..4259f98 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -17,4 +17,7 @@ jobs:
       packages: |
         rmf_task
         rmf_task_sequence
-      repos-branch-override: lyrical
+      # The current version of rmf_task requires a newer version of
+      # nlohmann_json_schema_validator which is not available in the rmf.repos
+      # files of the older distros.
+      repos-branch-override: main
diff --git a/.github/workflows/tsan.yaml b/.github/workflows/tsan.yaml
index ab15aab..fd04df5 100644
--- a/.github/workflows/tsan.yaml
+++ b/.github/workflows/tsan.yaml
@@ -17,4 +17,7 @@ jobs:
         rmf_task
         rmf_task_sequence
       mixin: tsan
-      repos-branch-override: lyrical
+      # The current version of rmf_task requires a newer version of
+      # nlohmann_json_schema_validator which is not available in the rmf.repos
+      # files of the older distros.
+      repos-branch-override: main