diff --git a/NOTICE.txt b/NOTICE.txt
index 7283e0c2..9ae34456 100644
--- a/NOTICE.txt
+++ b/NOTICE.txt
@@ -3537,11 +3537,11 @@ Contents of probable licence file $GOMODCACHE/go.elastic.co/ecszap@v1.0.3/LICENS
 
 --------------------------------------------------------------------------------
 Module  : go.elastic.co/fastjson
-Version : v1.5.0
-Time    : 2025-02-13T12:25:25Z
+Version : v1.5.1
+Time    : 2025-05-06T14:56:09Z
 Licence : MIT
 
-Contents of probable licence file $GOMODCACHE/go.elastic.co/fastjson@v1.5.0/LICENSE:
+Contents of probable licence file $GOMODCACHE/go.elastic.co/fastjson@v1.5.1/LICENSE:
 
 Copyright 2018 Elasticsearch BV
 
diff --git a/go.mod b/go.mod
index 746a74f5..208265c0 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@ require (
 	github.com/tidwall/gjson v1.18.0
 	github.com/tidwall/sjson v1.2.5
 	go.elastic.co/ecszap v1.0.3
-	go.elastic.co/fastjson v1.5.0
+	go.elastic.co/fastjson v1.5.1
 	go.uber.org/zap v1.27.0
 )
 
diff --git a/go.sum b/go.sum
index 6c2e9837..4657dcb4 100644
--- a/go.sum
+++ b/go.sum
@@ -194,8 +194,8 @@ github.com/zclconf/go-cty-debug v0.0.0-20240509010212-0d6042c53940 h1:4r45xpDWB6
 github.com/zclconf/go-cty-debug v0.0.0-20240509010212-0d6042c53940/go.mod h1:CmBdvvj3nqzfzJ6nTCIwDTPZ56aVGvDrmztiO5g3qrM=
 go.elastic.co/ecszap v1.0.3 h1:RQtagS3uSftE8mPZ3msqb6mVI67jgcDuy1PUqiMv8ow=
 go.elastic.co/ecszap v1.0.3/go.mod h1:fM1RLWDU25TB/L48RUJgz5Le2AnoCeY/g0zf2op8gDU=
-go.elastic.co/fastjson v1.5.0 h1:XAQ7wrNObNnDiXC8qQKblkmLwh0vJjX3Z/jEj6/08SI=
-go.elastic.co/fastjson v1.5.0/go.mod h1:WtvH5wz8z9pDOPqNYSYKoLLv/9zCWZLeejHWuvdL/EM=
+go.elastic.co/fastjson v1.5.1 h1:zeh1xHrFH79aQ6Xsw7YxixvnOdAl3OSv0xch/jRDzko=
+go.elastic.co/fastjson v1.5.1/go.mod h1:WtvH5wz8z9pDOPqNYSYKoLLv/9zCWZLeejHWuvdL/EM=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=