diff --git a/terraform/pipeline/workspace.py b/terraform/pipeline/workspace.py
index 4915d03f..526296e8 100644
--- a/terraform/pipeline/workspace.py
+++ b/terraform/pipeline/workspace.py
@@ -12,7 +12,7 @@
 if REASON == "PullRequest" and TARGET in ENV_BRANCHES:
     # it's a pull request against one of the environment branches, so use the target branch
     environment = TARGET
-elif REASON == "IndividualCI" and SOURCE in ENV_BRANCHES:
+elif REASON in ["IndividualCI", "Manual"] and SOURCE in ENV_BRANCHES:
     # it's being run on one of the environment branches, so use that
     environment = SOURCE
 else: