diff --git a/go.mod b/go.mod
index b8afe3a..7dfa65d 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/hashicorp/terraform-json
 
-go 1.18
+go 1.21
 
 require (
 	github.com/davecgh/go-spew v1.1.1
@@ -8,7 +8,7 @@
 	github.com/hashicorp/go-version v1.7.0
 	github.com/mitchellh/copystructure v1.2.0
 	github.com/sebdah/goldie v1.0.0
-	github.com/zclconf/go-cty v1.16.2
+	github.com/zclconf/go-cty v1.16.3
 	github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b
 )
 
diff --git a/go.sum b/go.sum
index d8b709c..bb0f3a8 100644
--- a/go.sum
+++ b/go.sum
@@ -27,8 +27,8 @@
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/vmihailenco/msgpack v3.3.3+incompatible/go.mod h1:fy3FlTQTDXWkZ7Bh6AcGMlsjHatGryHQYUTf1ShIgkk=
 github.com/zclconf/go-cty v1.2.0/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
-github.com/zclconf/go-cty v1.16.2 h1:LAJSwc3v81IRBZyUVQDUdZ7hs3SYs9jv0eZJDWHD/70=
-github.com/zclconf/go-cty v1.16.2/go.mod h1:VvMs5i0vgZdhYawQNq5kePSpLAoz8u1xvZgrPIxfnZE=
+github.com/zclconf/go-cty v1.16.3 h1:osr++gw2T61A8KVYHoQiFbFd1Lh3JOCXc/jFLJXKTxk=
+github.com/zclconf/go-cty v1.16.3/go.mod h1:VvMs5i0vgZdhYawQNq5kePSpLAoz8u1xvZgrPIxfnZE=
 github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b h1:FosyBZYxY34Wul7O/MSKey3txpPYyCqVO5ZyceuQJEI=
 github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b/go.mod h1:ZRKQfBXbGkpdV6QMzT3rU1kSTAnfu1dO8dPKjYprgj8=
 golang.org/x/net v0.0.0-20180811021610-c39426892332/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=