diff --git a/Makefile b/Makefile
index c6e1f34..f54c6ea 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ TARGET = ./cc-backend
 VAR = ./var
 CFG = config.json .env
 FRONTEND = ./web/frontend
-VERSION = 1.3.0
+VERSION = 1.3.1
 GIT_HASH := $(shell git rev-parse --short HEAD || echo 'development')
 CURRENT_TIME = $(shell date +"%Y-%m-%d:T%H:%M:%S")
 LD_FLAGS = '-s -X main.date=${CURRENT_TIME} -X main.version=${VERSION} -X main.commit=${GIT_HASH}'
@@ -28,7 +28,7 @@ SVELTE_SRC = $(wildcard $(FRONTEND)/src/*.svelte)         \
 			 $(wildcard $(FRONTEND)/src/plots/*.svelte)   \
 			 $(wildcard $(FRONTEND)/src/joblist/*.svelte)
 
-.PHONY: clean distclean test tags frontend $(TARGET)
+.PHONY: clean distclean test tags frontend swagger graphql $(TARGET)
 
 .NOTPARALLEL:
 
@@ -40,6 +40,15 @@ frontend:
 	$(info ===>  BUILD frontend)
 	cd web/frontend && npm install && npm run build
 
+swagger:
+	$(info ===>  GENERATE swagger)
+	@go run github.com/swaggo/swag/cmd/swag init -d ./internal/api,./pkg/schema -g rest.go -o ./api
+	@mv ./api/docs.go ./internal/api/docs.go
+
+graphql:
+	$(info ===>  GENERATE graphql)
+	@go run github.com/99designs/gqlgen
+
 clean:
 	$(info ===>  CLEAN)
 	@go clean
diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index a4f085e..547a1f4 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,12 +1,11 @@
-# `cc-backend` version 1.3.0
+# `cc-backend` version 1.3.1
 
 Supports job archive version 1 and database version 7.
 
-This is a minor release of `cc-backend`, the API backend and frontend
+This is a bugfix release of `cc-backend`, the API backend and frontend
 implementation of ClusterCockpit.
 For release specific notes visit the [ClusterCockpit Documentation](https://clusterockpit.org/docs/release/).
 
 ## Breaking changes
 
-* This release fixes bugs in the MySQL/MariaDB database schema. For this reason
-  you have to migrate your database using the `-migrate-db` switch.
+None
diff --git a/cmd/cc-backend/main.go b/cmd/cc-backend/main.go
index ed471ac..ad69c58 100644
--- a/cmd/cc-backend/main.go
+++ b/cmd/cc-backend/main.go
@@ -34,10 +34,10 @@ import (
 	"github.com/ClusterCockpit/cc-backend/internal/metricdata"
 	"github.com/ClusterCockpit/cc-backend/internal/repository"
 	"github.com/ClusterCockpit/cc-backend/internal/routerConfig"
-	"github.com/ClusterCockpit/cc-backend/internal/runtimeEnv"
 	"github.com/ClusterCockpit/cc-backend/internal/util"
 	"github.com/ClusterCockpit/cc-backend/pkg/archive"
 	"github.com/ClusterCockpit/cc-backend/pkg/log"
+	"github.com/ClusterCockpit/cc-backend/pkg/runtimeEnv"
 	"github.com/ClusterCockpit/cc-backend/pkg/schema"
 	"github.com/ClusterCockpit/cc-backend/web"
 	"github.com/go-co-op/gocron"
@@ -662,5 +662,5 @@ func main() {
 	}
 	runtimeEnv.SystemdNotifiy(true, "running")
 	wg.Wait()
-	log.Print("Gracefull shutdown completed!")
+	log.Print("Graceful shutdown completed!")
 }
diff --git a/internal/runtimeEnv/setup.go b/pkg/runtimeEnv/setup.go
similarity index 100%
rename from internal/runtimeEnv/setup.go
rename to pkg/runtimeEnv/setup.go
diff --git a/web/frontend/src/JobFootprint.svelte b/web/frontend/src/JobFootprint.svelte
index 8ed8089..84d6efe 100644
--- a/web/frontend/src/JobFootprint.svelte
+++ b/web/frontend/src/JobFootprint.svelte
@@ -101,7 +101,10 @@
         // Calculate Avg from jobMetrics
         const jm = jobMetrics.find((jm) => jm.name === fm && jm.scope === "node");
         if (jm?.metric?.statisticsSeries) {
-          mv = round(mean(jm.metric.statisticsSeries.mean), 2);
+          const noNan = jm.metric.statisticsSeries.mean.filter(function (val) {
+            return val != null;
+          });
+          mv = round(mean(noNan), 2);
         } else if (jm?.metric?.series?.length > 1) {
           const avgs = jm.metric.series.map((jms) => jms.statistics.avg);
           mv = round(mean(avgs), 2);