diff --git a/ext/typeexpr/get_type_test.go b/ext/typeexpr/get_type_test.go
index 0249dffb..d349d72a 100644
--- a/ext/typeexpr/get_type_test.go
+++ b/ext/typeexpr/get_type_test.go
@@ -615,6 +615,67 @@ func TestGetTypeDefaults(t *testing.T) {
 			"",
 		},
 
+		// Lists should remove optional metadata from the concrete default
+		// values.
+		{
+			`object({ list = optional(list(object({ required = string, optional = optional(string) })), [])})`,
+			&Defaults{
+				Type: cty.ObjectWithOptionalAttrs(map[string]cty.Type{
+					"list": cty.List(cty.ObjectWithOptionalAttrs(map[string]cty.Type{
+						"required": cty.String,
+						"optional": cty.String,
+					}, []string{"optional"})),
+				}, []string{"list"}),
+				DefaultValues: map[string]cty.Value{
+					"list": cty.ListValEmpty(cty.Object(map[string]cty.Type{
+						"required": cty.String,
+						"optional": cty.String,
+					})),
+				},
+			},
+			``,
+		},
+
+		// Lists should remove optional metadata from the concrete default
+		// values but should still apply recursive defaults.
+		{
+			`object({ list = optional(list(object({ required = string, optional = optional(string, "optional") })), [{ required = "required" }])})`,
+			&Defaults{
+				Type: cty.ObjectWithOptionalAttrs(map[string]cty.Type{
+					"list": cty.List(cty.ObjectWithOptionalAttrs(map[string]cty.Type{
+						"required": cty.String,
+						"optional": cty.String,
+					}, []string{"optional"})),
+				}, []string{"list"}),
+				DefaultValues: map[string]cty.Value{
+					"list": cty.ListVal([]cty.Value{cty.ObjectVal(map[string]cty.Value{
+						"required": cty.StringVal("required"),
+						"optional": cty.NullVal(cty.String),
+					})}),
+				},
+				Children: map[string]*Defaults{
+					"list": {
+						Type: cty.List(cty.ObjectWithOptionalAttrs(map[string]cty.Type{
+							"required": cty.String,
+							"optional": cty.String,
+						}, []string{"optional"})),
+						Children: map[string]*Defaults{
+							"": {
+								Type: cty.ObjectWithOptionalAttrs(map[string]cty.Type{
+									"required": cty.String,
+									"optional": cty.String,
+								}, []string{"optional"}),
+								DefaultValues: map[string]cty.Value{
+									"optional": cty.StringVal("optional"),
+								},
+							},
+						},
+					},
+				},
+			},
+			``,
+		},
+
 		// incompatible default value causes an error
 		{
 			`object({ a = optional(string, "hello"), b = optional(number, true) })`,
diff --git a/go.mod b/go.mod
index 0d22ec3d..065cac36 100644
--- a/go.mod
+++ b/go.mod
@@ -14,7 +14,7 @@ require (
 	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7
 	github.com/sergi/go-diff v1.0.0
 	github.com/spf13/pflag v1.0.2
-	github.com/zclconf/go-cty v1.12.0
+	github.com/zclconf/go-cty v1.12.1
 	github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b
 	golang.org/x/crypto v0.0.0-20220517005047-85d78b3ac167
 )
diff --git a/go.sum b/go.sum
index ac1a7146..a064ebde 100644
--- a/go.sum
+++ b/go.sum
@@ -33,6 +33,8 @@ github.com/vmihailenco/msgpack v3.3.3+incompatible/go.mod h1:fy3FlTQTDXWkZ7Bh6Ac
 github.com/zclconf/go-cty v1.2.0/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
 github.com/zclconf/go-cty v1.12.0 h1:F5E/vbilcrCtat9sYcEjlwwg1mDqbRTjyXR57nnx5sc=
 github.com/zclconf/go-cty v1.12.0/go.mod h1:s9IfD1LK5ccNMSWCVFCE2rJfHiZgi7JijgeWIMfhLvA=
+github.com/zclconf/go-cty v1.12.1 h1:PcupnljUm9EIvbgSHQnHhUr3fO6oFmkOrvs2BAFNXXY=
+github.com/zclconf/go-cty v1.12.1/go.mod h1:s9IfD1LK5ccNMSWCVFCE2rJfHiZgi7JijgeWIMfhLvA=
 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/crypto v0.0.0-20220517005047-85d78b3ac167 h1:O8uGbHCqlTp2P6QJSLmCojM4mN6UemYv8K+dCnmHmu0=