diff --git a/Project.toml b/Project.toml
index c0bec24..b6ee8e0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -24,4 +24,4 @@ Gurobi = "1"
 HiGHS = "1"
 Ipopt = "1"
 JuMP = "1"
-PowerModels = "0.19"
+PowerModels = "0.21"
diff --git a/src/Benchmarks.jl b/src/Benchmarks.jl
index ca48be2..6e03c55 100644
--- a/src/Benchmarks.jl
+++ b/src/Benchmarks.jl
@@ -62,11 +62,9 @@ function _run_latency(filename, arg)
     project = dirname(@__DIR__)
     file = joinpath(@__DIR__, "latency", filename)
     if arg === nothing
-        Base.run(`$julia_cmd --project=$project $file`)
-    else
-        Base.run(`$julia_cmd --project=$project $file $arg`)
+        return Base.run(`$julia_cmd --project=$project $file`)
     end
-    return
+    return Base.run(`$julia_cmd --project=$project $file $arg`)
 end
 
 function _benchmark_suite()