diff --git a/cmd.go b/cmd.go
index e825454..58c9633 100644
--- a/cmd.go
+++ b/cmd.go
@@ -12,7 +12,7 @@ import (
 	"strings"
 	"text/template"
 
-	blackfriday "gopkg.in/russross/blackfriday.v2"
+	blackfriday "github.com/russross/blackfriday/v2"
 )
 
 var (
diff --git a/go.mod b/go.mod
index 4bad318..483e9f1 100644
--- a/go.mod
+++ b/go.mod
@@ -1,9 +1,5 @@
 module github.com/davidnewhall/md2roff
 
-go 1.15
+go 1.16
 
-replace gopkg.in/russross/blackfriday.v2 => github.com/russross/blackfriday/v2 v2.1.0
-
-require (
-	gopkg.in/russross/blackfriday.v2 v2.1.0
-)
+require github.com/russross/blackfriday/v2 v2.1.0
diff --git a/renderer.go b/renderer.go
index 2f1bc7a..94d3ef8 100644
--- a/renderer.go
+++ b/renderer.go
@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"strings"
 
-	blackfriday "gopkg.in/russross/blackfriday.v2"
+	blackfriday "github.com/russross/blackfriday/v2"
 )
 
 // https://github.com/russross/blackfriday/blob/v2/markdown.go