diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a83ece3..f2f0d34 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,6 +18,7 @@ jobs:
           - "1.15"
           - "1.16"
           - "1.17"
+          - "1.18"
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
diff --git a/Makefile b/Makefile
index 1d5adeb..ca4100d 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,7 @@ GOPATH := "$(CURDIR)/vendor:$(CURDIR)"
 GOFMT := "$(shell dirname "$(GO)")/gofmt"
 GOOS ?= linux
 GOARCH ?= amd64
+GOVERSION := $(shell "$(GO)" env GOVERSION | sed "s|go||" )
 BINDIR := "$(CURDIR)/bin"
 VERSION := $(shell "$(CURDIR)/scripts/get-version.sh")
 TARVERSION := $(shell "$(CURDIR)/scripts/get-version.sh" --tar)
@@ -49,6 +50,9 @@ hook:
 
 ./vendor/bin/easyjson:
 	GOPATH=$(GOPATH) $(GO) get -u github.com/mailru/easyjson/...
+	@if dpkg --compare-versions "$(GOVERSION)" "ge" "1.17" ; then \
+		GOPATH=$(GOPATH) $(GO) install github.com/mailru/easyjson/...; \
+	fi
 
 continentmap.go:
 	$(CURDIR)/scripts/get_continent_map.py $@