diff --git a/test/runtests.jl b/test/runtests.jl
index f37ad63e17..df3b200621 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -119,7 +119,7 @@ if fl === "true"
   @info "Sys.CPU_THREADS: $(Sys.CPU_THREADS)"
 end
 
-if fl === "true" && !no_parallel && !Sys.iswindows()
+if fl === "true" && !no_parallel && !Sys.iswindows() && VERSION < v"1.11"
   @info "On CI, !no_parallel and not Windows"
   isparallel = true
   # CPU_THREADS reports number of logical cores (including hyperthreading)