diff --git a/cmd/karma/alert_history_test.go b/cmd/karma/alert_history_test.go
index 6c3cbfe4f..87d1cd702 100644
--- a/cmd/karma/alert_history_test.go
+++ b/cmd/karma/alert_history_test.go
@@ -12,9 +12,10 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/jarcoal/httpmock"
 	"github.com/prometheus/common/model"
+	"github.com/rs/zerolog"
+
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/regex"
-	"github.com/rs/zerolog"
 )
 
 type prometheusAPIV1Labels struct {
diff --git a/cmd/karma/assets.go b/cmd/karma/assets.go
index 70fc9c887..68125ff36 100644
--- a/cmd/karma/assets.go
+++ b/cmd/karma/assets.go
@@ -9,8 +9,9 @@ import (
 	"strings"
 	"time"
 
-	"github.com/prymitive/karma/ui"
 	"github.com/rs/zerolog/log"
+
+	"github.com/prymitive/karma/ui"
 )
 
 func contentText(w http.ResponseWriter) {
diff --git a/cmd/karma/auth_headers_test.go b/cmd/karma/auth_headers_test.go
index fa6a86a35..a438541fd 100644
--- a/cmd/karma/auth_headers_test.go
+++ b/cmd/karma/auth_headers_test.go
@@ -8,6 +8,7 @@ import (
 
 	lru "github.com/hashicorp/golang-lru"
 	"github.com/jarcoal/httpmock"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 	"github.com/prymitive/karma/internal/mock"
 )
diff --git a/cmd/karma/benchmark_test.go b/cmd/karma/benchmark_test.go
index 4788d8dfe..472f33dd2 100644
--- a/cmd/karma/benchmark_test.go
+++ b/cmd/karma/benchmark_test.go
@@ -9,9 +9,10 @@ import (
 	"runtime"
 	"testing"
 
+	"github.com/rs/zerolog"
+
 	"github.com/prymitive/karma/internal/mock"
 	"github.com/prymitive/karma/internal/models"
-	"github.com/rs/zerolog"
 )
 
 func reportMemoryMetrics(b *testing.B) {
diff --git a/cmd/karma/exporter.go b/cmd/karma/exporter.go
index c8e080d96..6a49b80e2 100644
--- a/cmd/karma/exporter.go
+++ b/cmd/karma/exporter.go
@@ -10,8 +10,9 @@ import (
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
 	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prymitive/karma/internal/config"
 	"github.com/rs/zerolog/log"
+
+	"github.com/prymitive/karma/internal/config"
 )
 
 var (
diff --git a/cmd/karma/metrics.go b/cmd/karma/metrics.go
index 9958a6717..8aa4eac79 100644
--- a/cmd/karma/metrics.go
+++ b/cmd/karma/metrics.go
@@ -4,6 +4,7 @@ import (
 	"runtime"
 
 	"github.com/prometheus/client_golang/prometheus"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 )
 
diff --git a/cmd/karma/proxy.go b/cmd/karma/proxy.go
index f76d79aa2..426ad65b5 100644
--- a/cmd/karma/proxy.go
+++ b/cmd/karma/proxy.go
@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"github.com/go-chi/chi/v5"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/mapper"
diff --git a/cmd/karma/proxy_test.go b/cmd/karma/proxy_test.go
index 3f161e4c2..8a8090ffc 100644
--- a/cmd/karma/proxy_test.go
+++ b/cmd/karma/proxy_test.go
@@ -15,10 +15,11 @@ import (
 	lru "github.com/hashicorp/golang-lru"
 	"github.com/jarcoal/httpmock"
 	"github.com/pmezard/go-difflib/difflib"
+	"github.com/rs/zerolog"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/mock"
-	"github.com/rs/zerolog"
 )
 
 // httptest.NewRecorder() doesn't implement http.CloseNotifier
diff --git a/cmd/karma/views.go b/cmd/karma/views.go
index 7b07e101c..905eec501 100644
--- a/cmd/karma/views.go
+++ b/cmd/karma/views.go
@@ -15,6 +15,7 @@ import (
 
 	"github.com/cnf/structhash"
 	"github.com/fvbommel/sortorder"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/filters"
diff --git a/cmd/karma/views_test.go b/cmd/karma/views_test.go
index 660fa939a..287678bab 100644
--- a/cmd/karma/views_test.go
+++ b/cmd/karma/views_test.go
@@ -18,6 +18,7 @@ import (
 
 	"github.com/beme/abide"
 	lru "github.com/hashicorp/golang-lru"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/mock"
diff --git a/internal/alertmanager/benchmark_test.go b/internal/alertmanager/benchmark_test.go
index cfdb0e2a5..fd8fb9b58 100644
--- a/internal/alertmanager/benchmark_test.go
+++ b/internal/alertmanager/benchmark_test.go
@@ -3,9 +3,10 @@ package alertmanager_test
 import (
 	"testing"
 
+	"github.com/spf13/pflag"
+
 	"github.com/prymitive/karma/internal/alertmanager"
 	"github.com/prymitive/karma/internal/config"
-	"github.com/spf13/pflag"
 )
 
 func BenchmarkDedupAlerts(b *testing.B) {
diff --git a/internal/config/config_test.go b/internal/config/config_test.go
index 01a0ce6ad..32ab810fe 100644
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
@@ -8,10 +8,11 @@ import (
 	"time"
 
 	"github.com/google/go-cmp/cmp"
-	"github.com/prymitive/karma/internal/uri"
 	"github.com/rs/zerolog"
 	"github.com/spf13/pflag"
 
+	"github.com/prymitive/karma/internal/uri"
+
 	"github.com/pmezard/go-difflib/difflib"
 
 	yaml "gopkg.in/yaml.v3"
diff --git a/internal/mapper/v017/silences.go b/internal/mapper/v017/silences.go
index 4f8fc1254..ed762a767 100644
--- a/internal/mapper/v017/silences.go
+++ b/internal/mapper/v017/silences.go
@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/Masterminds/semver/v3"
+
 	"github.com/prymitive/karma/internal/mapper"
 	"github.com/prymitive/karma/internal/models"
 )
diff --git a/internal/mapper/v017/status.go b/internal/mapper/v017/status.go
index be3b8f52a..0f3c66f78 100644
--- a/internal/mapper/v017/status.go
+++ b/internal/mapper/v017/status.go
@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/Masterminds/semver/v3"
+
 	"github.com/prymitive/karma/internal/mapper"
 	"github.com/prymitive/karma/internal/models"
 )
diff --git a/internal/models/alert.go b/internal/models/alert.go
index 6683930ae..bd0e02639 100644
--- a/internal/models/alert.go
+++ b/internal/models/alert.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/cnf/structhash"
 	"github.com/fvbommel/sortorder"
+
 	"github.com/prymitive/karma/internal/config"
 )
 
diff --git a/internal/models/alert_test.go b/internal/models/alert_test.go
index a683ad4b8..e4354ee9b 100644
--- a/internal/models/alert_test.go
+++ b/internal/models/alert_test.go
@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
+
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/models"
 )
diff --git a/internal/models/annotation.go b/internal/models/annotation.go
index e73496d82..f25f0e4f5 100644
--- a/internal/models/annotation.go
+++ b/internal/models/annotation.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/fvbommel/sortorder"
+
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/slices"
 )
diff --git a/internal/models/annotation_test.go b/internal/models/annotation_test.go
index 0251848c7..b56ebddf2 100644
--- a/internal/models/annotation_test.go
+++ b/internal/models/annotation_test.go
@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
+
 	"github.com/prymitive/karma/internal/config"
 	"github.com/prymitive/karma/internal/models"
 )
diff --git a/internal/uri/uri_test.go b/internal/uri/uri_test.go
index d36a82384..77d6a86c5 100644
--- a/internal/uri/uri_test.go
+++ b/internal/uri/uri_test.go
@@ -12,8 +12,9 @@ import (
 	"testing"
 	"time"
 
-	"github.com/prymitive/karma/internal/uri"
 	"github.com/rs/zerolog"
+
+	"github.com/prymitive/karma/internal/uri"
 )
 
 type httpTransportTest struct {
diff --git a/make/go.mk b/make/go.mk
index 7a01895de..9f50c9d91 100644
--- a/make/go.mk
+++ b/make/go.mk
@@ -41,9 +41,12 @@ $(GOBIN)/golangci-lint: tools/golangci-lint/go.mod tools/golangci-lint/go.sum
 lint-go: $(GOBIN)/golangci-lint lint-go-looppointer
 	$(ENV) golangci-lint run -v --timeout 5m -E staticcheck,misspell,promlinter,revive,tenv,errorlint,exportloopref,predeclared
 
+$(GOBIN)/lint-go-goimports: tools/goimports/go.mod tools/goimports/go.sum
+	go install -modfile=tools/goimports/go.mod golang.org/x/tools/cmd/goimports
 .PHONY: format-go
-format-go:
+format-go: $(GOBIN)/lint-go-goimports
 	gofmt -l -s -w .
+	goimports -local github.com/prymitive/karma -w .
 
 .PHONY: download-deps-go
 download-deps-go:
diff --git a/tools/goimports/go.mod b/tools/goimports/go.mod
new file mode 100644
index 000000000..de9cdef32
--- /dev/null
+++ b/tools/goimports/go.mod
@@ -0,0 +1,11 @@
+module _
+
+go 1.17
+
+require golang.org/x/tools v0.1.8
+
+require (
+	golang.org/x/mod v0.5.1 // indirect
+	golang.org/x/sys v0.0.0-20211019181941-9d821ace8654 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+)
diff --git a/tools/goimports/go.sum b/tools/goimports/go.sum
new file mode 100644
index 000000000..b0bad9f67
--- /dev/null
+++ b/tools/goimports/go.sum
@@ -0,0 +1,28 @@
+github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/mod v0.5.1 h1:OJxoQ/rynoF0dcCdI7cLPktw/hR2cueqYfjm43oqK38=
+golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20211019181941-9d821ace8654 h1:id054HUawV2/6IGm2IV8KZQjqtwAOo2CYlOToYqa0d0=
+golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.8 h1:P1HhGGuLW4aAclzjtmJdf0mJOjVUZUzOTqkAkWL+l6w=
+golang.org/x/tools v0.1.8/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/tools/goimports/main.go b/tools/goimports/main.go
new file mode 100644
index 000000000..907433b9c
--- /dev/null
+++ b/tools/goimports/main.go
@@ -0,0 +1,7 @@
+//go:build tools
+
+package tools
+
+import (
+	_ "golang.org/x/tools/cmd/goimports"
+)