diff --git a/README.md b/README.md
index 546706a..d572972 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 Enforce a stricter format than `gofmt`, while being backwards compatible.
 That is, `gofumpt` is happy with a subset of the formats that `gofmt` is happy with.
 
-The tool is a fork of `gofmt` as of Go 1.21, and requires Go 1.20 or later.
+The tool is a fork of `gofmt` as of Go 1.22, and requires Go 1.21 or later.
 It can be used as a drop-in replacement to format your Go code,
 and running `gofmt` after `gofumpt` should produce no changes.
 For example:
@@ -15,7 +15,7 @@ For example:
 	gofumpt -l -w .
 
 Some of the Go source files in this repository belong to the Go project.
-The project includes copies of `go/printer` and `go/doc/comment` as of Go 1.21
+The project includes copies of `go/printer` and `go/doc/comment` as of Go 1.22
 to ensure consistent formatting independent of what Go version is being used.
 The [added formatting rules](#Added-rules) are implemented in the `format` package.
 
diff --git a/internal/govendor/diff/diff.go b/internal/govendor/diff/diff.go
index 0aeeb75..6a40b23 100644
--- a/internal/govendor/diff/diff.go
+++ b/internal/govendor/diff/diff.go
@@ -74,7 +74,7 @@ func Diff(oldName string, old []byte, newName string, new []byte) []byte {
 			continue
 		}
 
-		// Expand matching lines as far possible,
+		// Expand matching lines as far as possible,
 		// establishing that x[start.x:end.x] == y[start.y:end.y].
 		// Note that on the first (or last) iteration we may (or definitely do)
 		// have an empty match: start.x==end.x and start.y==end.y.
diff --git a/internal/govendor/go/doc/comment/html.go b/internal/govendor/go/doc/comment/html.go
index bc076f6..9244509 100644
--- a/internal/govendor/go/doc/comment/html.go
+++ b/internal/govendor/go/doc/comment/html.go
@@ -10,13 +10,13 @@ import (
 	"strconv"
 )
 
-// An htmlPrinter holds the state needed for printing a Doc as HTML.
+// An htmlPrinter holds the state needed for printing a [Doc] as HTML.
 type htmlPrinter struct {
 	*Printer
 	tight bool
 }
 
-// HTML returns an HTML formatting of the Doc.
+// HTML returns an HTML formatting of the [Doc].
 // See the [Printer] documentation for ways to customize the HTML output.
 func (p *Printer) HTML(d *Doc) []byte {
 	hp := &htmlPrinter{Printer: p}
diff --git a/internal/govendor/go/doc/comment/parse.go b/internal/govendor/go/doc/comment/parse.go
index 372577b..bd42c55 100644
--- a/internal/govendor/go/doc/comment/parse.go
+++ b/internal/govendor/go/doc/comment/parse.go
@@ -5,7 +5,7 @@
 package comment
 
 import (
-	"sort"
+	"slices"
 	"strings"
 	"unicode"
 	"unicode/utf8"
@@ -176,7 +176,7 @@ type DocLink struct {
 func (*DocLink) text() {}
 
 // A Parser is a doc comment parser.
-// The fields in the struct can be filled in before calling Parse
+// The fields in the struct can be filled in before calling [Parser.Parse]
 // in order to customize the details of the parsing process.
 type Parser struct {
 	// Words is a map of Go identifier words that
@@ -260,14 +260,12 @@ func (d *parseDoc) lookupPkg(pkg string) (importPath string, ok bool) {
 }
 
 func isStdPkg(path string) bool {
-	// TODO(rsc): Use sort.Find once we don't have to worry about
-	// copying this code into older Go environments.
-	i := sort.Search(len(stdPkgs), func(i int) bool { return stdPkgs[i] >= path })
-	return i < len(stdPkgs) && stdPkgs[i] == path
+	_, ok := slices.BinarySearch(stdPkgs, path)
+	return ok
 }
 
 // DefaultLookupPackage is the default package lookup
-// function, used when [Parser].LookupPackage is nil.
+// function, used when [Parser.LookupPackage] is nil.
 // It recognizes names of the packages from the standard
 // library with single-element import paths, such as math,
 // which would otherwise be impossible to name.
@@ -281,7 +279,7 @@ func DefaultLookupPackage(name string) (importPath string, ok bool) {
 	return "", false
 }
 
-// Parse parses the doc comment text and returns the *Doc form.
+// Parse parses the doc comment text and returns the *[Doc] form.
 // Comment markers (/* // and */) in the text must have already been removed.
 func (p *Parser) Parse(text string) *Doc {
 	lines := unindent(strings.Split(text, "\n"))
diff --git a/internal/govendor/go/doc/comment/print.go b/internal/govendor/go/doc/comment/print.go
index e1c070d..a6ae821 100644
--- a/internal/govendor/go/doc/comment/print.go
+++ b/internal/govendor/go/doc/comment/print.go
@@ -150,7 +150,7 @@ type commentPrinter struct {
 	*Printer
 }
 
-// Comment returns the standard Go formatting of the Doc,
+// Comment returns the standard Go formatting of the [Doc],
 // without any comment markers.
 func (p *Printer) Comment(d *Doc) []byte {
 	cp := &commentPrinter{Printer: p}
diff --git a/internal/govendor/go/doc/comment/text.go b/internal/govendor/go/doc/comment/text.go
index 6f9c2e2..4e4214e 100644
--- a/internal/govendor/go/doc/comment/text.go
+++ b/internal/govendor/go/doc/comment/text.go
@@ -21,7 +21,7 @@ type textPrinter struct {
 	width      int
 }
 
-// Text returns a textual formatting of the Doc.
+// Text returns a textual formatting of the [Doc].
 // See the [Printer] documentation for ways to customize the text output.
 func (p *Printer) Text(d *Doc) []byte {
 	tp := &textPrinter{
diff --git a/internal/govendor/go/format/format.go b/internal/govendor/go/format/format.go
index 5540686..63e65e9 100644
--- a/internal/govendor/go/format/format.go
+++ b/internal/govendor/go/format/format.go
@@ -43,11 +43,11 @@ const parserMode = parser.ParseComments | parser.SkipObjectResolution
 
 // Node formats node in canonical gofmt style and writes the result to dst.
 //
-// The node type must be *ast.File, *printer.CommentedNode, []ast.Decl,
-// []ast.Stmt, or assignment-compatible to ast.Expr, ast.Decl, ast.Spec,
-// or ast.Stmt. Node does not modify node. Imports are not sorted for
+// The node type must be *[ast.File], *[printer.CommentedNode], [][ast.Decl],
+// [][ast.Stmt], or assignment-compatible to [ast.Expr], [ast.Decl], [ast.Spec],
+// or [ast.Stmt]. Node does not modify node. Imports are not sorted for
 // nodes representing partial source files (for instance, if the node is
-// not an *ast.File or a *printer.CommentedNode not wrapping an *ast.File).
+// not an *[ast.File] or a *[printer.CommentedNode] not wrapping an *[ast.File]).
 //
 // The function may return early (before the entire result is written)
 // and return a formatting error, for instance due to an incorrect AST.
diff --git a/internal/govendor/go/printer/nodes.go b/internal/govendor/go/printer/nodes.go
index a58525b..b8c7ded 100644
--- a/internal/govendor/go/printer/nodes.go
+++ b/internal/govendor/go/printer/nodes.go
@@ -44,10 +44,7 @@ import (
 // linebreaks. At the moment there is no easy way to know about
 // future (not yet interspersed) comments in this function.
 func (p *printer) linebreak(line, min int, ws whiteSpace, newSection bool) (nbreaks int) {
-	n := nlimit(line - p.pos.Line)
-	if n < min {
-		n = min
-	}
+	n := max(nlimit(line-p.pos.Line), min)
 	if n > 0 {
 		p.print(ws)
 		if newSection {
@@ -670,9 +667,7 @@ func walkBinary(e *ast.BinaryExpr) (has4, has5 bool, maxProblem int) {
 		h4, h5, mp := walkBinary(l)
 		has4 = has4 || h4
 		has5 = has5 || h5
-		if maxProblem < mp {
-			maxProblem = mp
-		}
+		maxProblem = max(maxProblem, mp)
 	}
 
 	switch r := e.Y.(type) {
@@ -685,9 +680,7 @@ func walkBinary(e *ast.BinaryExpr) (has4, has5 bool, maxProblem int) {
 		h4, h5, mp := walkBinary(r)
 		has4 = has4 || h4
 		has5 = has5 || h5
-		if maxProblem < mp {
-			maxProblem = mp
-		}
+		maxProblem = max(maxProblem, mp)
 
 	case *ast.StarExpr:
 		if e.Op == token.QUO { // `*/`
@@ -699,9 +692,7 @@ func walkBinary(e *ast.BinaryExpr) (has4, has5 bool, maxProblem int) {
 		case "/*", "&&", "&^":
 			maxProblem = 5
 		case "++", "--":
-			if maxProblem < 4 {
-				maxProblem = 4
-			}
+			maxProblem = max(maxProblem, 4)
 		}
 	}
 	return
@@ -983,15 +974,24 @@ func (p *printer) expr1(expr ast.Expr, prec1, depth int) {
 		if len(x.Args) > 1 {
 			depth++
 		}
-		var wasIndented bool
-		if _, ok := x.Fun.(*ast.FuncType); ok {
-			// conversions to literal function types require parentheses around the type
+
+		// Conversions to literal function types or <-chan
+		// types require parentheses around the type.
+		paren := false
+		switch t := x.Fun.(type) {
+		case *ast.FuncType:
+			paren = true
+		case *ast.ChanType:
+			paren = t.Dir == ast.RECV
+		}
+		if paren {
 			p.print(token.LPAREN)
-			wasIndented = p.possibleSelectorExpr(x.Fun, token.HighestPrec, depth)
+		}
+		wasIndented := p.possibleSelectorExpr(x.Fun, token.HighestPrec, depth)
+		if paren {
 			p.print(token.RPAREN)
-		} else {
-			wasIndented = p.possibleSelectorExpr(x.Fun, token.HighestPrec, depth)
 		}
+
 		p.setPos(x.Lparen)
 		p.print(token.LPAREN)
 		if x.Ellipsis.IsValid() {
@@ -1739,7 +1739,7 @@ func (p *printer) genDecl(d *ast.GenDecl) {
 	p.setPos(d.Pos())
 	p.print(d.Tok, blank)
 
-	if d.Lparen.IsValid() || len(d.Specs) > 1 {
+	if d.Lparen.IsValid() || len(d.Specs) != 1 {
 		// group of parenthesized declarations
 		p.setPos(d.Lparen)
 		p.print(token.LPAREN)
diff --git a/internal/govendor/go/printer/printer.go b/internal/govendor/go/printer/printer.go
index 2ab0278..11c056d 100644
--- a/internal/govendor/go/printer/printer.go
+++ b/internal/govendor/go/printer/printer.go
@@ -860,10 +860,7 @@ func (p *printer) writeWhitespace(n int) {
 
 // nlimit limits n to maxNewlines.
 func nlimit(n int) int {
-	if n > maxNewlines {
-		n = maxNewlines
-	}
-	return n
+	return min(n, maxNewlines)
 }
 
 func mayCombine(prev token.Token, next byte) (b bool) {
@@ -1412,7 +1409,7 @@ func (cfg *Config) fprint(output io.Writer, fset *token.FileSet, node any, nodeS
 }
 
 // A CommentedNode bundles an AST node and corresponding comments.
-// It may be provided as argument to any of the Fprint functions.
+// It may be provided as argument to any of the [Fprint] functions.
 type CommentedNode struct {
 	Node     any // *ast.File, or ast.Expr, ast.Decl, ast.Spec, or ast.Stmt
 	Comments []*ast.CommentGroup
@@ -1420,14 +1417,14 @@ type CommentedNode struct {
 
 // Fprint "pretty-prints" an AST node to output for a given configuration cfg.
 // Position information is interpreted relative to the file set fset.
-// The node type must be *ast.File, *CommentedNode, []ast.Decl, []ast.Stmt,
-// or assignment-compatible to ast.Expr, ast.Decl, ast.Spec, or ast.Stmt.
+// The node type must be *[ast.File], *[CommentedNode], [][ast.Decl], [][ast.Stmt],
+// or assignment-compatible to [ast.Expr], [ast.Decl], [ast.Spec], or [ast.Stmt].
 func (cfg *Config) Fprint(output io.Writer, fset *token.FileSet, node any) error {
 	return cfg.fprint(output, fset, node, make(map[ast.Node]int))
 }
 
 // Fprint "pretty-prints" an AST node to output.
-// It calls Config.Fprint with default settings.
+// It calls [Config.Fprint] with default settings.
 // Note that gofmt uses tabs for indentation but spaces for alignment;
 // use format.Node (package mvdan.cc/gofumpt/internal/govendor/go/format) for output that matches gofmt.
 func Fprint(output io.Writer, fset *token.FileSet, node any) error {
diff --git a/internal/govendor/version.txt b/internal/govendor/version.txt
index 010ab74..3c9a034 100644
--- a/internal/govendor/version.txt
+++ b/internal/govendor/version.txt
@@ -1 +1 @@
-go1.21.0
+go1.22.0