diff --git a/Dockerfile b/Dockerfile
index 478388f..dd936a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,11 @@
-FROM golang:latest
+FROM golang:1.19.6 as builder
 ENV GOPATH="/go"
 WORKDIR /go/src/github.com/kovetskiy/mark
 COPY / .
-RUN make get
-RUN make build
+RUN make get \
+&& make build
 
-FROM alpine:latest
-RUN apk --no-cache add ca-certificates bash git
-COPY --from=0 /go/src/github.com/kovetskiy/mark/mark /bin/
+FROM alpine:3.17
+RUN apk --no-cache add ca-certificates bash sed git
+COPY --from=builder /go/src/github.com/kovetskiy/mark/mark /bin/
 WORKDIR /docs
diff --git a/go.mod b/go.mod
index edf6c03..635c28b 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815
 	github.com/kovetskiy/blackfriday/v2 v2.3.0
 	github.com/kovetskiy/gopencils v0.0.0-20230119081704-a73db75b2f69
-	github.com/kovetskiy/ko v1.6.0
+	github.com/kovetskiy/ko v1.6.1
 	github.com/kovetskiy/lorg v1.2.0
 	github.com/reconquest/karma-go v0.0.0-20220904173930-21741aa386a6
 	github.com/reconquest/pkg v1.3.0
diff --git a/go.sum b/go.sum
index 1a663bd..cb5e6e2 100644
--- a/go.sum
+++ b/go.sum
@@ -12,8 +12,8 @@ github.com/kovetskiy/blackfriday/v2 v2.3.0 h1:KKABLPopQ2+DWKtM/ifx0RijGz09mNlCuE
 github.com/kovetskiy/blackfriday/v2 v2.3.0/go.mod h1:ES7tjNJdnHp1h8dib5cmoa//rgvQeYrtzGzGM/Kozk4=
 github.com/kovetskiy/gopencils v0.0.0-20230119081704-a73db75b2f69 h1:vn82v0gKhTTm67znr7nxYBNW4mJ8zfY7dywZivUy3tY=
 github.com/kovetskiy/gopencils v0.0.0-20230119081704-a73db75b2f69/go.mod h1:t7LFI5v8Q5+nl9sqId9PS0C9H9F4c5d4XlhkLve1MCM=
-github.com/kovetskiy/ko v1.6.0 h1:LPIu9Y/5qIarxGZZgCMmcAgFfKe7WLLBQpPBTLaTKp4=
-github.com/kovetskiy/ko v1.6.0/go.mod h1:WH6doo9XYpbDWe9HsELro1vXAfXCM4ByG5arIp9JjDE=
+github.com/kovetskiy/ko v1.6.1 h1:EO5v6CrW6x6vzxo7CKbN0r+foIRjz06U6wVSgxUVqMc=
+github.com/kovetskiy/ko v1.6.1/go.mod h1:WH6doo9XYpbDWe9HsELro1vXAfXCM4ByG5arIp9JjDE=
 github.com/kovetskiy/lorg v0.0.0-20200107130803-9a7136a95634/go.mod h1:B8HeKAukXULNzWWsW5k/SQyDkiQZPn7lTBJDB46MZ9I=
 github.com/kovetskiy/lorg v1.2.0 h1:wNIUT/VOhcjKOmizDClZLvchbKFGW+dzf9fQXbSVS5E=
 github.com/kovetskiy/lorg v1.2.0/go.mod h1:rdiamaIRUCkX9HtFZd0D9dQqUbad21hipHk+sat7Z6s=