diff --git a/Dockerfile b/Dockerfile
index 39e8fd4..2eb384d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@
 # Install the latest versions of our mods.  This is done as a separate step
 # so it will pull from an image cache if possible, unless there are changes.
 #
-FROM --platform=${BUILDPLATFORM} golang:1.19-alpine AS buildmod
+FROM --platform=${BUILDPLATFORM} golang:1.20-alpine AS buildmod
 ENV CGO_ENABLED=0
 RUN mkdir /build
 WORKDIR /build
diff --git a/go.mod b/go.mod
index 3103160..9133aac 100644
--- a/go.mod
+++ b/go.mod
@@ -7,18 +7,14 @@ require (
 	github.com/gorilla/mux v1.8.0
 	github.com/influxdata/influxdb-client-go/v2 v2.12.2
 	github.com/skandragon/gohealthcheck v1.0.3
-	github.com/stretchr/testify v1.8.1
 )
 
 require (
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/deepmap/oapi-codegen v1.12.4 // indirect
 	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/influxdata/line-protocol v0.0.0-20210922203350-b1ad95c89adf // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	golang.org/x/net v0.8.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 0eb4de3..f1d9fc1 100644
--- a/go.sum
+++ b/go.sum
@@ -4,7 +4,6 @@ github.com/apapsch/go-jsonmerge/v2 v2.0.0/go.mod h1:lvDnEdqiQrp0O42VQGgmlKpxL1AP
 github.com/bmatcuk/doublestar v1.1.1/go.mod h1:UD6OnuiIn0yFxxA2le/rnRU1G4RaI4UvFv1sNto9p6w=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/deepmap/oapi-codegen v1.12.4 h1:pPmn6qI9MuOtCz82WY2Xaw46EQjgvxednXXrP7g5Q2s=
 github.com/deepmap/oapi-codegen v1.12.4/go.mod h1:3lgHGMu6myQ2vqbbTXH2H1o4eXFTGnFiDaOaKKl5yas=
 github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
@@ -29,17 +28,8 @@ github.com/skandragon/gohealthcheck v1.0.3 h1:Q4gIYvX2eBfEuM9msyK6NapTPWK0zgpyuU
 github.com/skandragon/gohealthcheck v1.0.3/go.mod h1:fEu59f3K+54jXlAOs0YDHojk7XximptsxYzCBXd9+oI=
 github.com/spkg/bom v0.0.0-20160624110644-59b7046e48ad/go.mod h1:qLr4V1qq6nMqFKkMo8ZTx3f+BZEkzsRUY10Xsm2mwU0=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
 golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=