diff --git a/schema/fs.go b/schema/fs.go
index 1dea532fb..d8ac2bc30 100644
--- a/schema/fs.go
+++ b/schema/fs.go
@@ -205,7 +205,7 @@ var _escData = map[string]*_escFile{
 	"/config-schema.json": {
 		local:   "config-schema.json",
 		size:    774,
-		modtime: 1478057674,
+		modtime: 1478292182,
 		compressed: `
 H4sIAAAJbogA/5SRvW7rMAyFdz+F4WS8ju7QKWsfoEPHooMqUzEDWFRJZgiKvHv1EzcxEBTuEsSH/M4R
 ya+mbbsBxDFGRQrdvu1eIoRnCmoxALfpn8dD+xrBoUdnS9e/jG3FjTDZjIyqcW/MUSj0Vd0RH8zA1mv/
@@ -219,7 +219,7 @@ AP//XlvgsQYDAAA=
 	"/content-descriptor.json": {
 		local:   "content-descriptor.json",
 		size:    836,
-		modtime: 1478141504,
+		modtime: 1479340044,
 		compressed: `
 H4sIAAAJbogA/5SSP2/iQBDFe3+KkaE88BXoCtpLnyLpohSLd2wPwrvO7CDkRHz37HhtMImUPw3Cb99v
 5j173zKA3GIomToh7/It5Pcduv/eiSGHDPoPncDdaPIMDx2WVFFpBuKPjliGssHWKN6IdNui2AfvVkld
@@ -234,7 +234,7 @@ DLQ9RAMAAA==
 	"/defs-config.json": {
 		local:   "defs-config.json",
 		size:    2270,
-		modtime: 1478057674,
+		modtime: 1478292182,
 		compressed: `
 H4sIAAAJbogA/+RVzY7TMBC+5yksw7GwF8SB6y5HVKQKOCBUucl4O0vsMeMJEKF9d5xs6cZJG7q79MSh
 ajLx9zMz9vhXoZSuIJaMQZC8fqP0FVj02L1FFQwLlk1tWAmpZQB/SV4MemCVnixeq1WAEi2Wpscv7gj3
@@ -249,28 +249,28 @@ OU9Ck3MwHdKnQMEFadd9J4/BN0Q1GH/0PBTd77b4HQAA//9fxiKD3ggAAA==
 
 	"/defs-image.json": {
 		local:   "defs-image.json",
-		size:    2753,
-		modtime: 1478141527,
+		size:    2781,
+		modtime: 1479340044,
 		compressed: `
-H4sIAAAJbogA/7RWy27bMBA8x19BKAFy8EM9FAVqBAGK5tJTCqSnBm6xoVYWU4lUSTqpE/jfu5RkmXol
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-csfz5bnvopSbNA06oleT/Wg32U3+BgAA//8jeF0swQoAAA==
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+7NI0GEBvZvXoMDvM/gYAAP//lByrrd0KAAA=
 `,
 	},
 
 	"/defs.json": {
 		local:   "defs.json",
 		size:    3193,
-		modtime: 1470056192,
+		modtime: 1478292182,
 		compressed: `
 H4sIAAAJbogA/7RWTXPaMBC98ys8tEfa2PIX9NYp/cghAzOZnjo9uGYBtSCpstxpmuG/VzLGWPZiMKWH
 JPau9r23T6tYzwPHGS4gSyUVinI2fOMMp7CkjJq3zMkzWDhqLXm+WvNc6UdwZgLYO85UQhlI51FASpc0
@@ -288,31 +288,31 @@ MrVJbn8cB+ZnN/gbAAD//0JyEpx5DAAA
 
 	"/image-manifest-schema.json": {
 		local:   "image-manifest-schema.json",
-		size:    1032,
-		modtime: 1470056192,
+		size:    1118,
+		modtime: 1479340044,
 		compressed: `
-H4sIAAAJbogA/6RSPU/zMBDe8ytOacc39TswdWViQAxULIjBJOfkqsYOPoNUVf3v+KMujsoAdMyTez7u
-8R0qgLpDbi1Njoyu11A/TKhvjXaSNFq4G2WPcC81KWQHjxO2pKiVcfpfoC+5HXCUgTo4N62F2LLRTUJX
-xvais1K55v+NSNgi8ajLFPYc413b7MqRlqYFhQRiPCVIXLefMLDN6xbbEzZZr2EdIfs/YTGPJYknr5iW
-S/DlzpuBGBThrgNOGyKDGxCiOWRzSHrwkQRBMkgNpB32aGOKKP63zcQ87Fkt75ptIn5Mv+sRO5KbNHG4
-0v9L6+y9tKiCVoeKmzi+Co+7EB4gTaE+LnizaN5TUV/mymohDWrX5EcwNqrO6Tu593FLei5CWiv3RdsO
-x3Lup0beamYotTYu3jVfX2azI99oKfm7TktmlbPGpLXFt3eyGGI9f3flF5cxf495vf7jpTpWnwEAAP//
-X3p8DwgEAAA=
+H4sIAAAJbogA/6RSO4/UMBDu8ytGvuu4xICorqWiQBScaBCFiSfJnOIHtm/F6rT/HT/iTbJLgdgyX/y9
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+xMG3ZaAp1B2PQLyT/HrHbGrWnJQ5/PVCDuV5W+xv58gud1/3sR9vk7Z2av4EAAD//wnPEwleBAAA
 `,
 	},
 
 	"/manifest-list-schema.json": {
 		local:   "manifest-list-schema.json",
-		size:    1010,
-		modtime: 1470056192,
+		size:    1101,
+		modtime: 1479340044,
 		compressed: `
-H4sIAAAJbogA/6ySMU/7MBDF93yKU9rxn/o/MHWFBQnEQMWCGExyaa5q7OAzSFXV747tS0qiMIDoUqkv
-fu9+7+xjBpBXyKWjzpM1+Rryhw7NtTVek0EHt63eItxrQzWyhzsKP48dllRTqZPlX8xYctlgq6O/8b5b
-K7VjawpRV9ZtVeV07Yv/V0q0hfioGiwcPDaMLofRnGxyWlHEUG2PUewDhgT4Q4cxwr7usOy1zoUg5wk5
-fIkVgyY5TyFWaoo8b79piKEm3FfAUhMZfIOQCGBCABIKH5IKmkEbIONxiy6hpAl/6Kim2OfIofUwK+kn
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-AA==
+H4sIAAAJbogA/6ySP48TMRDF+3yKkY8OsgZEdS00SCAKTjSIwqxnd+cU/8Hjizid8t3xn/Vml1AgXZpI
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+xdKHr3XBa8ulx39Bryd3jbWQioC/HiigXp5D/GvpxN+Pu7rrXX6G0+5PAAAA//+jTbrrTQQAAA==
 `,
 	},
 
diff --git a/schema/image-manifest-schema.json b/schema/image-manifest-schema.json
index f25c85fd2..792d87ff9 100644
--- a/schema/image-manifest-schema.json
+++ b/schema/image-manifest-schema.json
@@ -7,11 +7,16 @@
     "schemaVersion": {
       "description": "This field specifies the image manifest schema version as an integer",
       "id": "https://opencontainers.org/schema/image/manifest/schemaVersion",
-      "type": "integer"
+      "type": "integer",
+      "minimum": 2,
+      "maximum": 2
     },
     "mediaType": {
       "id": "https://opencontainers.org/schema/image/manifest/mediaType",
-      "$ref": "defs-image.json#/definitions/mediaType"
+      "type": "string",
+      "enum": [
+        "application/vnd.oci.image.manifest.v1+json"
+      ]
     },
     "config": {
       "$ref": "content-descriptor.json"
diff --git a/schema/manifest-list-schema.json b/schema/manifest-list-schema.json
index 261db7d1f..990331f8f 100644
--- a/schema/manifest-list-schema.json
+++ b/schema/manifest-list-schema.json
@@ -7,11 +7,16 @@
     "schemaVersion": {
       "description": "This field specifies the image manifest-list schema version as an integer",
       "id": "https://opencontainers.org/schema/image/manifest-list/schemaVersion",
-      "type": "integer"
+      "type": "integer",
+      "minimum": 2,
+      "maximum": 2
     },
     "mediaType": {
       "id": "https://opencontainers.org/schema/image/manifest-list/mediaType",
-      "$ref": "defs-image.json#/definitions/mediaType"
+      "type": "string",
+      "enum": [
+        "application/vnd.oci.image.manifest.list.v1+json"
+      ]
     },
     "manifests": {
       "type": "array",
diff --git a/schema/manifest_backwards_compatibility_test.go b/schema/manifest_backwards_compatibility_test.go
index 4bd055cbf..3cf43ce63 100644
--- a/schema/manifest_backwards_compatibility_test.go
+++ b/schema/manifest_backwards_compatibility_test.go
@@ -38,7 +38,7 @@ var compatMap = map[string]string{
 func convertFormats(input string) string {
 	out := input
 	for k, v := range compatMap {
-		out = strings.Replace(out, v, k, -1)
+		out = strings.Replace(out, k, v, -1)
 	}
 	return out
 }