diff --git a/go.mod b/go.mod
index 369df13..752cf3d 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/mercari/terraform-provider-openpgp
 
 require (
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/hashicorp/terraform-plugin-sdk v1.6.0
+	github.com/hashicorp/terraform-plugin-sdk v1.7.0
 	github.com/pkg/errors v0.9.1
 	golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586
 )
diff --git a/go.sum b/go.sum
index 72bfe55..7159c49 100644
--- a/go.sum
+++ b/go.sum
@@ -110,8 +110,12 @@ github.com/hashicorp/logutils v1.0.0 h1:dLEQVugN8vlakKOUE3ihGLTZJRB4j+M2cdTm/ORI
 github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
 github.com/hashicorp/terraform-config-inspect v0.0.0-20191115094559-17f92b0546e8 h1:+RyjwU+Gnd/aTJBPZVDNm903eXVjjqhbaR4Ypx3xYyY=
 github.com/hashicorp/terraform-config-inspect v0.0.0-20191115094559-17f92b0546e8/go.mod h1:p+ivJws3dpqbp1iP84+npOyAmTTOLMgCzrXd3GSdn/A=
-github.com/hashicorp/terraform-plugin-sdk v1.6.0 h1:Um5hsAL7kKsfTHtan8lybY/d03F2bHu4fjRB1H6Ag4U=
-github.com/hashicorp/terraform-plugin-sdk v1.6.0/go.mod h1:H5QLx/uhwfxBZ59Bc5SqT19M4i+fYt7LZjHTpbLZiAg=
+github.com/hashicorp/terraform-json v0.4.0 h1:KNh29iNxozP5adfUFBJ4/fWd0Cu3taGgjHB38JYqOF4=
+github.com/hashicorp/terraform-json v0.4.0/go.mod h1:eAbqb4w0pSlRmdvl8fOyHAi/+8jnkVYN28gJkSJrLhU=
+github.com/hashicorp/terraform-plugin-sdk v1.7.0 h1:B//oq0ZORG+EkVrIJy0uPGSonvmXqxSzXe8+GhknoW0=
+github.com/hashicorp/terraform-plugin-sdk v1.7.0/go.mod h1:OjgQmey5VxnPej/buEhe+YqKm0KNvV3QqU4hkqHqPCY=
+github.com/hashicorp/terraform-plugin-test v1.2.0 h1:AWFdqyfnOj04sxTdaAF57QqvW7XXrT8PseUHkbKsE8I=
+github.com/hashicorp/terraform-plugin-test v1.2.0/go.mod h1:QIJHYz8j+xJtdtLrFTlzQVC0ocr3rf/OjIpgZLK56Hs=
 github.com/hashicorp/terraform-svchost v0.0.0-20191011084731-65d371908596 h1:hjyO2JsNZUKT1ym+FAdlBEkGPevazYsmVgIMw7dVELg=
 github.com/hashicorp/terraform-svchost v0.0.0-20191011084731-65d371908596/go.mod h1:kNDNcF7sN4DocDLBkQYz73HGKwN1ANB1blq4lIYLYvg=
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb h1:b5rjCoWHc7eqmAS4/qyk21ZsHyb6Mxv/jykxvNTkU4M=
@@ -195,6 +199,8 @@ github.com/vmihailenco/msgpack v4.0.1+incompatible/go.mod h1:fy3FlTQTDXWkZ7Bh6Ac
 github.com/zclconf/go-cty v1.0.0/go.mod h1:xnAOWiHeOqg2nWS62VtQ7pbOu17FtxJNW8RLEih+O3s=
 github.com/zclconf/go-cty v1.1.0 h1:uJwc9HiBOCpoKIObTQaLR+tsEXx1HBHnOsOOpcdhZgw=
 github.com/zclconf/go-cty v1.1.0/go.mod h1:xnAOWiHeOqg2nWS62VtQ7pbOu17FtxJNW8RLEih+O3s=
+github.com/zclconf/go-cty v1.2.1 h1:vGMsygfmeCl4Xb6OA5U5XVAaQZ69FvoG7X2jUtQujb8=
+github.com/zclconf/go-cty v1.2.1/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
 github.com/zclconf/go-cty-yaml v1.0.1 h1:up11wlgAaDvlAGENcFDnZgkn0qUJurso7k6EpURKNF8=
 github.com/zclconf/go-cty-yaml v1.0.1/go.mod h1:IP3Ylp0wQpYm50IHK8OZWKMu6sPJIUgKa8XhiVHura0=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=