diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e8a99a..4a9b25d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@ GasPowerModels.jl Change Log
 ### staged
 - nothing
 
+### v0.6.0
+- Update to PowerModelsRestoration v0.8 (breaking)
+
 ### v0.5.1
 - Update normalized pressure zone values in matgas data
 - Add missing `report` flags to variables
diff --git a/Project.toml b/Project.toml
index 1af0f49..cdbd594 100644
--- a/Project.toml
+++ b/Project.toml
@@ -2,7 +2,7 @@ name = "GasPowerModels"
 uuid = "1fcaf345-95e3-5b8b-91d6-2145eb844b9d"
 authors = ["Russell Bent"]
 repo = "https://github.com/lanl-ansi/GasPowerModels.jl"
-version = "0.5.1"
+version = "0.6.0"
 
 [deps]
 GasModels = "5e113713-6c35-5477-b766-e1109486666f"
@@ -18,7 +18,7 @@ InfrastructureModels = "~0.6, ~0.7"
 JSON = "~0.21"
 JuMP = "~0.23, 1"
 Memento = "~1.0, ~1.1, ~1.2, ~1.3, ~1.4"
-PowerModelsRestoration = "~0.6, ~0.7"
+PowerModelsRestoration = "~0.8"
 julia = "1.6"
 
 [extras]
diff --git a/src/core/objective.jl b/src/core/objective.jl
index 8a1295d..3e1973a 100644
--- a/src/core/objective.jl
+++ b/src/core/objective.jl
@@ -72,8 +72,7 @@ function objective_expression_opf_cost(gpm::AbstractGasPowerModel; n::Int = nw_i
     gen_cost = Dict{Tuple{Int, Int}, Any}()
 
     for (i, gen) in _IM.ref(gpm, _PM.pm_it_sym, n, :gen)
-        conductor_ids = _PM.conductor_ids(_get_powermodel_from_gaspowermodel(gpm), n)
-        pg = sum(_IM.var(gpm, _PM.pm_it_sym, n, :pg, i)[c] for c in conductor_ids)
+        pg = _IM.var(gpm, _PM.pm_it_sym, n, :pg, i)
 
         if length(gen["cost"]) == 1
             gen_cost[(n, i)] = gen["cost"][1]