diff --git a/go.mod b/go.mod
index ab28f9182..72878ca0f 100644
--- a/go.mod
+++ b/go.mod
@@ -15,7 +15,7 @@ require (
 	github.com/golang/snappy v0.0.1
 	github.com/klauspost/compress v1.10.10
 	github.com/lithammer/go-jump-consistent-hash v1.0.1
-	github.com/valyala/fastjson v1.5.1
+	github.com/valyala/fastjson v1.5.2
 	github.com/valyala/fastrand v1.0.0
 	github.com/valyala/gozstd v1.7.0
 	github.com/valyala/histogram v1.0.1
diff --git a/go.sum b/go.sum
index 84c5903b6..03e7bbd04 100644
--- a/go.sum
+++ b/go.sum
@@ -163,8 +163,8 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasthttp v1.12.0/go.mod h1:229t1eWu9UXTPmoUkbpN/fctKPBY4IJoFXQnxHGXy6E=
-github.com/valyala/fastjson v1.5.1 h1:SXaQZVSwLjZOVhDEhjiCcDtnX0Feu7Z7A1+C5atpoHM=
-github.com/valyala/fastjson v1.5.1/go.mod h1:CLCAqky6SMuOcxStkYQvblddUtoRxhYMGLrsQns1aXY=
+github.com/valyala/fastjson v1.5.2 h1:VTbMfG0sCyXqC66PS+ME1cHXy5ClW085avDoy28t4Uo=
+github.com/valyala/fastjson v1.5.2/go.mod h1:CLCAqky6SMuOcxStkYQvblddUtoRxhYMGLrsQns1aXY=
 github.com/valyala/fastrand v1.0.0 h1:LUKT9aKer2dVQNUi3waewTbKV+7H17kvWFNKs2ObdkI=
 github.com/valyala/fastrand v1.0.0/go.mod h1:HWqCzkrkg6QXT8V2EXWvXCoow7vLwOFN002oeRzjapQ=
 github.com/valyala/gozstd v1.7.0 h1:Ljh5c9zboqLhwTI33al32R72iCZfn0mCbVGcFWbGwRQ=
diff --git a/vendor/github.com/valyala/fastjson/parser.go b/vendor/github.com/valyala/fastjson/parser.go
index c617835f0..06a3acc4a 100644
--- a/vendor/github.com/valyala/fastjson/parser.go
+++ b/vendor/github.com/valyala/fastjson/parser.go
@@ -32,7 +32,7 @@ func (p *Parser) Parse(s string) (*Value, error) {
 	p.b = append(p.b[:0], s...)
 	p.c.reset()
 
-	v, tail, err := parseValue(b2s(p.b), &p.c)
+	v, tail, err := parseValue(b2s(p.b), &p.c, 0)
 	if err != nil {
 		return nil, fmt.Errorf("cannot parse JSON: %s; unparsed tail: %q", err, startEndString(tail))
 	}
@@ -95,20 +95,27 @@ type kv struct {
 	v *Value
 }
 
-func parseValue(s string, c *cache) (*Value, string, error) {
+// MaxDepth is the maximum depth for nested JSON.
+const MaxDepth = 300
+
+func parseValue(s string, c *cache, depth int) (*Value, string, error) {
 	if len(s) == 0 {
 		return nil, s, fmt.Errorf("cannot parse empty string")
 	}
+	depth++
+	if depth > MaxDepth {
+		return nil, s, fmt.Errorf("too big depth for the nested JSON; it exceeds %d", MaxDepth)
+	}
 
 	if s[0] == '{' {
-		v, tail, err := parseObject(s[1:], c)
+		v, tail, err := parseObject(s[1:], c, depth)
 		if err != nil {
 			return nil, tail, fmt.Errorf("cannot parse object: %s", err)
 		}
 		return v, tail, nil
 	}
 	if s[0] == '[' {
-		v, tail, err := parseArray(s[1:], c)
+		v, tail, err := parseArray(s[1:], c, depth)
 		if err != nil {
 			return nil, tail, fmt.Errorf("cannot parse array: %s", err)
 		}
@@ -160,7 +167,7 @@ func parseValue(s string, c *cache) (*Value, string, error) {
 	return v, tail, nil
 }
 
-func parseArray(s string, c *cache) (*Value, string, error) {
+func parseArray(s string, c *cache, depth int) (*Value, string, error) {
 	s = skipWS(s)
 	if len(s) == 0 {
 		return nil, s, fmt.Errorf("missing ']'")
@@ -181,7 +188,7 @@ func parseArray(s string, c *cache) (*Value, string, error) {
 		var err error
 
 		s = skipWS(s)
-		v, s, err = parseValue(s, c)
+		v, s, err = parseValue(s, c, depth)
 		if err != nil {
 			return nil, s, fmt.Errorf("cannot parse array value: %s", err)
 		}
@@ -203,7 +210,7 @@ func parseArray(s string, c *cache) (*Value, string, error) {
 	}
 }
 
-func parseObject(s string, c *cache) (*Value, string, error) {
+func parseObject(s string, c *cache, depth int) (*Value, string, error) {
 	s = skipWS(s)
 	if len(s) == 0 {
 		return nil, s, fmt.Errorf("missing '}'")
@@ -240,7 +247,7 @@ func parseObject(s string, c *cache) (*Value, string, error) {
 
 		// Parse value
 		s = skipWS(s)
-		kv.v, s, err = parseValue(s, c)
+		kv.v, s, err = parseValue(s, c, depth)
 		if err != nil {
 			return nil, s, fmt.Errorf("cannot parse object value: %s", err)
 		}
diff --git a/vendor/github.com/valyala/fastjson/scanner.go b/vendor/github.com/valyala/fastjson/scanner.go
index b9ed24264..89b38816f 100644
--- a/vendor/github.com/valyala/fastjson/scanner.go
+++ b/vendor/github.com/valyala/fastjson/scanner.go
@@ -65,7 +65,7 @@ func (sc *Scanner) Next() bool {
 	}
 
 	sc.c.reset()
-	v, tail, err := parseValue(sc.s, &sc.c)
+	v, tail, err := parseValue(sc.s, &sc.c, 0)
 	if err != nil {
 		sc.err = err
 		return false
diff --git a/vendor/modules.txt b/vendor/modules.txt
index cb8c78ebb..3accc65cd 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -103,7 +103,7 @@ github.com/klauspost/compress/zstd/internal/xxhash
 github.com/lithammer/go-jump-consistent-hash
 # github.com/valyala/bytebufferpool v1.0.0
 github.com/valyala/bytebufferpool
-# github.com/valyala/fastjson v1.5.1
+# github.com/valyala/fastjson v1.5.2
 github.com/valyala/fastjson
 github.com/valyala/fastjson/fastfloat
 # github.com/valyala/fastrand v1.0.0