diff --git a/smithy-aws-protocol-tests/model/restJson1/http-headers.smithy b/smithy-aws-protocol-tests/model/restJson1/http-headers.smithy
index f0d5ebc3896..aa0b670ab8a 100644
--- a/smithy-aws-protocol-tests/model/restJson1/http-headers.smithy
+++ b/smithy-aws-protocol-tests/model/restJson1/http-headers.smithy
@@ -57,8 +57,8 @@ apply InputAndOutputWithHeaders @httpRequestTests([
             "X-Short": "123",
             "X-Integer": "123",
             "X-Long": "123",
-            "X-Float": "1.0",
-            "X-Double": "1.0",
+            "X-Float": "1.1",
+            "X-Double": "1.1",
             "X-IntegerList": "1, 2, 3",
         },
         body: "",
@@ -67,8 +67,8 @@ apply InputAndOutputWithHeaders @httpRequestTests([
             headerShort: 123,
             headerInteger: 123,
             headerLong: 123,
-            headerFloat: 1.0,
-            headerDouble: 1.0,
+            headerFloat: 1.1,
+            headerDouble: 1.1,
             headerIntegerList: [1, 2, 3],
         }
     },
@@ -150,8 +150,8 @@ apply InputAndOutputWithHeaders @httpResponseTests([
             "X-Short": "123",
             "X-Integer": "123",
             "X-Long": "123",
-            "X-Float": "1.0",
-            "X-Double": "1.0",
+            "X-Float": "1.1",
+            "X-Double": "1.1",
             "X-IntegerList": "1, 2, 3",
         },
         body: "",
@@ -160,8 +160,8 @@ apply InputAndOutputWithHeaders @httpResponseTests([
             headerShort: 123,
             headerInteger: 123,
             headerLong: 123,
-            headerFloat: 1.0,
-            headerDouble: 1.0,
+            headerFloat: 1.1,
+            headerDouble: 1.1,
             headerIntegerList: [1, 2, 3],
         }
     },
diff --git a/smithy-aws-protocol-tests/model/restJson1/http-labels.smithy b/smithy-aws-protocol-tests/model/restJson1/http-labels.smithy
index 160c4f22abf..dc71bec9867 100644
--- a/smithy-aws-protocol-tests/model/restJson1/http-labels.smithy
+++ b/smithy-aws-protocol-tests/model/restJson1/http-labels.smithy
@@ -26,15 +26,15 @@ apply HttpRequestWithLabels @httpRequestTests([
         documentation: "Sends a GET request that uses URI label bindings",
         protocol: restJson1,
         method: "GET",
-        uri: "/HttpRequestWithLabels/string/1/2/3/4.0/5.0/true/2019-12-16T23%3A48%3A18Z",
+        uri: "/HttpRequestWithLabels/string/1/2/3/4.1/5.1/true/2019-12-16T23%3A48%3A18Z",
         body: "",
         params: {
             string: "string",
             short: 1,
             integer: 2,
             long: 3,
-            float: 4.0,
-            double: 5.0,
+            float: 4.1,
+            double: 5.1,
             boolean: true,
             timestamp: 1576540098
         }
diff --git a/smithy-aws-protocol-tests/model/restJson1/http-query.smithy b/smithy-aws-protocol-tests/model/restJson1/http-query.smithy
index 5d8aaca1020..a11857d94f8 100644
--- a/smithy-aws-protocol-tests/model/restJson1/http-query.smithy
+++ b/smithy-aws-protocol-tests/model/restJson1/http-query.smithy
@@ -51,16 +51,16 @@ apply AllQueryStringTypes @httpRequestTests([
             "IntegerSet=2",
             "IntegerSet=3",
             "Long=4",
-            "Float=1",
-            "Double=1",
-            "DoubleList=1.0",
-            "DoubleList=2.0",
-            "DoubleList=3.0",
+            "Float=1.1",
+            "Double=1.1",
+            "DoubleList=1.1",
+            "DoubleList=2.1",
+            "DoubleList=3.1",
             "Boolean=true",
             "BooleanList=true",
             "BooleanList=false",
             "BooleanList=true",
-            "Timestamp=1",
+            "Timestamp=1970-01-01T00%3A00%3A01Z",
             "TimestampList=1970-01-01T00%3A00%3A01Z",
             "TimestampList=1970-01-01T00%3A00%3A02Z",
             "TimestampList=1970-01-01T00%3A00%3A03Z",
@@ -79,9 +79,9 @@ apply AllQueryStringTypes @httpRequestTests([
             queryIntegerList: [1, 2, 3],
             queryIntegerSet: [1, 2, 3],
             queryLong: 4,
-            queryFloat: 1,
-            queryDouble: 1,
-            queryDoubleList: [1.0, 2.0, 3.0],
+            queryFloat: 1.1,
+            queryDouble: 1.1,
+            queryDoubleList: [1.1, 2.1, 3.1],
             queryBoolean: true,
             queryBooleanList: [true, false, true],
             queryTimestamp: 1,
diff --git a/smithy-aws-protocol-tests/model/restXml/http-headers.smithy b/smithy-aws-protocol-tests/model/restXml/http-headers.smithy
index a329ef37ff2..84c9a8580bf 100644
--- a/smithy-aws-protocol-tests/model/restXml/http-headers.smithy
+++ b/smithy-aws-protocol-tests/model/restXml/http-headers.smithy
@@ -57,8 +57,8 @@ apply InputAndOutputWithHeaders @httpRequestTests([
             "X-Short": "123",
             "X-Integer": "123",
             "X-Long": "123",
-            "X-Float": "1.0",
-            "X-Double": "1.0",
+            "X-Float": "1.1",
+            "X-Double": "1.1",
             "X-IntegerList": "1, 2, 3",
         },
         body: "",
@@ -67,8 +67,8 @@ apply InputAndOutputWithHeaders @httpRequestTests([
             headerShort: 123,
             headerInteger: 123,
             headerLong: 123,
-            headerFloat: 1.0,
-            headerDouble: 1.0,
+            headerFloat: 1.1,
+            headerDouble: 1.1,
             headerIntegerList: [1, 2, 3],
         }
     },
@@ -150,8 +150,8 @@ apply InputAndOutputWithHeaders @httpResponseTests([
             "X-Short": "123",
             "X-Integer": "123",
             "X-Long": "123",
-            "X-Float": "1.0",
-            "X-Double": "1.0",
+            "X-Float": "1.1",
+            "X-Double": "1.1",
             "X-IntegerList": "1, 2, 3",
         },
         body: "",
@@ -160,8 +160,8 @@ apply InputAndOutputWithHeaders @httpResponseTests([
             headerShort: 123,
             headerInteger: 123,
             headerLong: 123,
-            headerFloat: 1.0,
-            headerDouble: 1.0,
+            headerFloat: 1.1,
+            headerDouble: 1.1,
             headerIntegerList: [1, 2, 3],
         }
     },
diff --git a/smithy-aws-protocol-tests/model/restXml/http-labels.smithy b/smithy-aws-protocol-tests/model/restXml/http-labels.smithy
index e57fb1ebbb1..cdd23c9fcca 100644
--- a/smithy-aws-protocol-tests/model/restXml/http-labels.smithy
+++ b/smithy-aws-protocol-tests/model/restXml/http-labels.smithy
@@ -26,15 +26,15 @@ apply HttpRequestWithLabels @httpRequestTests([
         documentation: "Sends a GET request that uses URI label bindings",
         protocol: restXml,
         method: "GET",
-        uri: "/HttpRequestWithLabels/string/1/2/3/4.0/5.0/true/2019-12-16T23%3A48%3A18Z",
+        uri: "/HttpRequestWithLabels/string/1/2/3/4.1/5.1/true/2019-12-16T23%3A48%3A18Z",
         body: "",
         params: {
             string: "string",
             short: 1,
             integer: 2,
             long: 3,
-            float: 4.0,
-            double: 5.0,
+            float: 4.1,
+            double: 5.1,
             boolean: true,
             timestamp: 1576540098
         }
diff --git a/smithy-aws-protocol-tests/model/restXml/http-query.smithy b/smithy-aws-protocol-tests/model/restXml/http-query.smithy
index 923126e4e6b..8acf301694e 100644
--- a/smithy-aws-protocol-tests/model/restXml/http-query.smithy
+++ b/smithy-aws-protocol-tests/model/restXml/http-query.smithy
@@ -51,16 +51,16 @@ apply AllQueryStringTypes @httpRequestTests([
             "IntegerSet=2",
             "IntegerSet=3",
             "Long=4",
-            "Float=1",
-            "Double=1",
-            "DoubleList=1.0",
-            "DoubleList=2.0",
-            "DoubleList=3.0",
+            "Float=1.1",
+            "Double=1.1",
+            "DoubleList=1.1",
+            "DoubleList=2.1",
+            "DoubleList=3.1",
             "Boolean=true",
             "BooleanList=true",
             "BooleanList=false",
             "BooleanList=true",
-            "Timestamp=1",
+            "Timestamp=1970-01-01T00%3A00%3A01Z",
             "TimestampList=1970-01-01T00%3A00%3A01Z",
             "TimestampList=1970-01-01T00%3A00%3A02Z",
             "TimestampList=1970-01-01T00%3A00%3A03Z",
@@ -79,9 +79,9 @@ apply AllQueryStringTypes @httpRequestTests([
             queryIntegerList: [1, 2, 3],
             queryIntegerSet: [1, 2, 3],
             queryLong: 4,
-            queryFloat: 1,
-            queryDouble: 1,
-            queryDoubleList: [1.0, 2.0, 3.0],
+            queryFloat: 1.1,
+            queryDouble: 1.1,
+            queryDoubleList: [1.1, 2.1, 3.1],
             queryBoolean: true,
             queryBooleanList: [true, false, true],
             queryTimestamp: 1,