diff --git a/launch/launch/substitutions/command.py b/launch/launch/substitutions/command.py
index 0aed7a9d6..cd728877b 100644
--- a/launch/launch/substitutions/command.py
+++ b/launch/launch/substitutions/command.py
@@ -109,6 +109,7 @@ def perform(self, context: LaunchContext) -> Text:
         try:
             result = subprocess.run(
                 command,
+                env=context.environment,
                 stdout=subprocess.PIPE,
                 stderr=stderr,
                 universal_newlines=True)