diff --git a/cmd/gmnhg/main.go b/cmd/gmnhg/main.go
index 67dceaf..006a009 100644
--- a/cmd/gmnhg/main.go
+++ b/cmd/gmnhg/main.go
@@ -203,7 +203,7 @@ func main() {
 			if err != nil {
 				return err
 			}
-			tmpl, err := template.New(tmplName).Funcs(funcMap).Parse(string(contents))
+			tmpl, err := template.New(tmplName).Funcs(defineFuncMap()).Parse(string(contents))
 			if err != nil {
 				return err
 			}
diff --git a/cmd/gmnhg/templates.go b/cmd/gmnhg/templates.go
index 84442ca..e886af3 100644
--- a/cmd/gmnhg/templates.go
+++ b/cmd/gmnhg/templates.go
@@ -16,6 +16,7 @@
 package main
 
 import (
+	"github.com/Masterminds/sprig/v3"
 	"sort"
 	"text/template"
 )
@@ -37,12 +38,13 @@ func (p postsSort) Swap(i, j int) {
 }
 
 func mustParseTmpl(name, value string) *template.Template {
-	return template.Must(template.New(name).Funcs(funcMap).Parse(value))
+	return template.Must(template.New(name).Funcs(defineFuncMap()).Parse(value))
 }
 
-var funcMap template.FuncMap = template.FuncMap{
+func defineFuncMap() template.FuncMap {
+	fm := sprig.TxtFuncMap()	
 	// sorts posts by date, newest posts go first
-	"sortPosts": func(posts []*post) []*post {
+	fm["sortPosts"] = func(posts []*post) []*post {
 		// sortPosts is most likely to be used in a pipeline, and the
 		// user has every right to expect it doesn't modify their
 		// existing posts slice
@@ -50,7 +52,8 @@ var funcMap template.FuncMap = template.FuncMap{
 		copy(ps, posts)
 		sort.Sort(ps)
 		return ps
-	},
+	}
+	return fm
 }
 
 var defaultSingleTemplate = mustParseTmpl("single", `# {{ .Metadata.PostTitle }}
diff --git a/go.mod b/go.mod
index 59fe983..20b7ca2 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module github.com/tdemin/gmnhg
 go 1.16
 
 require (
+	github.com/Masterminds/sprig/v3 v3.2.2
 	github.com/gomarkdown/markdown v0.0.0-20210514010506-3b9f47219fe7
 	github.com/mattn/go-runewidth v0.0.13 // indirect
 	github.com/olekukonko/tablewriter v0.0.5
diff --git a/go.sum b/go.sum
index 4a47f72..f67b1a2 100644
--- a/go.sum
+++ b/go.sum
@@ -1,14 +1,52 @@
+github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
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+github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
+github.com/Masterminds/sprig/v3 v3.2.2 h1:17jRggJu518dr3QaafizSXOjKYp94wKfABxUmyxvxX8=
+github.com/Masterminds/sprig/v3 v3.2.2/go.mod h1:UoaO7Yp8KlPnJIYWTFkMaqPUYKTfGFPhxNuwnnxkKlk=
+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/gomarkdown/markdown v0.0.0-20210514010506-3b9f47219fe7 h1:oKYOfNR7Hp6XpZ4JqolL5u642Js5Z0n7psPVl+S5heo=
 github.com/gomarkdown/markdown v0.0.0-20210514010506-3b9f47219fe7/go.mod h1:aii0r/K0ZnHv7G0KF7xy1v0A7s2Ljrb5byB7MO5p6TU=
+github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
+github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/huandu/xstrings v1.3.1 h1:4jgBlKK6tLKFvO8u5pmYjG91cqytmDCDvGh7ECVFfFs=
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 github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
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 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
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