diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/cat.health/10_basic.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/cat.health/10_basic.yml
index 380caec931899..504b7c8f9b1b6 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/cat.health/10_basic.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/cat.health/10_basic.yml
@@ -45,7 +45,7 @@
                 \d+            \s+ # init
                 \d+            \s+ # unassign
                 \d+            \s+ # pending_tasks
-                (-|\d+[.]\d+ms|s) \s+ # max task waiting time
+                (-|\d+(?:[.]\d+)?m?s) \s+ # max task waiting time
                 \d+\.\d+%             # active shards percent
                 \n
               )+
@@ -72,7 +72,7 @@
                 \d+            \s+ # init
                 \d+            \s+ # unassign
                 \d+            \s+ # pending_tasks
-                (-|\d+[.]\d+ms|s) \s+ # max task waiting time
+                (-|\d+(?:[.]\d+)?m?s) \s+ # max task waiting time
                 \d+\.\d+%             # active shards percent
                 \n
               )+