diff --git a/.travis.yml b/.travis.yml
index c294631..eb93a09 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,12 @@ sudo: false
 
 language: go
 
+go:
+  - "1.13"
+
 script:
+  # This statement installs the binary of gnostic and makes it available in $PATH. The binary
+  # is needed in one of the methods. Therefore, we explicitly need this statement.
   - go get github.com/googleapis/gnostic
   - go test -v ./... -race -coverprofile=coverage.txt -covermode=atomic
 
diff --git a/generator/checker_test.go b/generator/checker_test.go
index 93a7b7b..1c37e47 100644
--- a/generator/checker_test.go
+++ b/generator/checker_test.go
@@ -23,7 +23,11 @@ import (
 
 func TestNewFeatureCheckerParameters(t *testing.T) {
 	input := "testfiles/parameters.yaml"
-	documentv3 := readOpenAPIBinary(input)
+	documentv3, err := ParseOpenAPIDoc(input)
+	if err != nil {
+		t.Errorf("Error while parsing input file: %s", input)
+		return
+	}
 
 	checker := NewGrpcChecker(documentv3)
 	messages := checker.Run()
@@ -39,7 +43,11 @@ func TestNewFeatureCheckerParameters(t *testing.T) {
 
 func TestFeatureCheckerRequestBodies(t *testing.T) {
 	input := "testfiles/requestBodies.yaml"
-	documentv3 := readOpenAPIBinary(input)
+	documentv3, err := ParseOpenAPIDoc(input)
+	if err != nil {
+		t.Errorf("Error while parsing input file: %s", input)
+		return
+	}
 
 	checker := NewGrpcChecker(documentv3)
 	messages := checker.Run()
@@ -54,7 +62,11 @@ func TestFeatureCheckerRequestBodies(t *testing.T) {
 
 func TestFeatureCheckerResponses(t *testing.T) {
 	input := "testfiles/responses.yaml"
-	documentv3 := readOpenAPIBinary(input)
+	documentv3, err := ParseOpenAPIDoc(input)
+	if err != nil {
+		t.Errorf("Error while parsing input file: %s", input)
+		return
+	}
 
 	checker := NewGrpcChecker(documentv3)
 	messages := checker.Run()
@@ -69,7 +81,11 @@ func TestFeatureCheckerResponses(t *testing.T) {
 
 func TestFeatureCheckerOther(t *testing.T) {
 	input := "testfiles/other.yaml"
-	documentv3 := readOpenAPIBinary(input)
+	documentv3, err := ParseOpenAPIDoc(input)
+	if err != nil {
+		t.Errorf("Error while parsing input file: %s", input)
+		return
+	}
 
 	checker := NewGrpcChecker(documentv3)
 	messages := checker.Run()
@@ -96,9 +112,12 @@ func validateKeys(t *testing.T, expectedKeys [][]string, messages []*plugins.Mes
 	}
 }
 
-func readOpenAPIBinary(input string) *openapiv3.Document {
+func ParseOpenAPIDoc(input string) (*openapiv3.Document, error) {
 	cmd := exec.Command("gnostic", "--pb-out=-", input)
-	b, _ := cmd.Output()
-	documentv3, _ := createOpenAPIDocFromGnosticOutput(b)
-	return documentv3
+	b, err := cmd.Output()
+	if err != nil {
+		return nil, err
+	}
+	documentv3, err := createOpenAPIDocFromGnosticOutput(b)
+	return documentv3, err
 }
diff --git a/generator/language.go b/generator/language.go
index 13a82a2..0daa38d 100644
--- a/generator/language.go
+++ b/generator/language.go
@@ -14,10 +14,11 @@
 package generator
 
 import (
-	surface_v1 "github.com/googleapis/gnostic/surface"
 	"regexp"
 	"strconv"
 	"strings"
+
+	surface_v1 "github.com/googleapis/gnostic/surface"
 )
 
 type ProtoLanguageModel struct{}
@@ -60,7 +61,14 @@ func findNativeType(fType string, fFormat string) string {
 	case "boolean":
 		return "bool"
 	case "number":
-		return "int32"
+		switch fFormat {
+		case "float":
+			return "float"
+		case "double":
+			return "double"
+		default:
+			return "float"
+		}
 	case "integer":
 		switch fFormat {
 		case "int32":
diff --git a/generator/renderer_test.go b/generator/renderer_test.go
index 3ee7e0b..12d35d1 100644
--- a/generator/renderer_test.go
+++ b/generator/renderer_test.go
@@ -18,7 +18,6 @@ import (
 	surface "github.com/googleapis/gnostic/surface"
 	"io/ioutil"
 	"os"
-	"os/exec"
 	"path"
 	"path/filepath"
 	"strings"
@@ -112,9 +111,10 @@ func runGeneratorWithoutEnvironment(input string, packageName string) ([]byte, e
 }
 
 func buildSurfaceModel(input string) (*surface.Model, error) {
-	cmd := exec.Command("gnostic", "--pb-out=-", input)
-	b, _ := cmd.Output()
-	documentv3, _ := createOpenAPIDocFromGnosticOutput(b)
+	documentv3, err := ParseOpenAPIDoc(input)
+	if err != nil {
+		return nil, err
+	}
 	surfaceModel, err := surface.NewModelFromOpenAPI3(documentv3, input)
 	return surfaceModel, err
 }
diff --git a/generator/testfiles/goldstandard/other.proto b/generator/testfiles/goldstandard/other.proto
index 9e65e49..cdb3e0b 100644
--- a/generator/testfiles/goldstandard/other.proto
+++ b/generator/testfiles/goldstandard/other.proto
@@ -20,6 +20,12 @@ message Person {
   string name = 3;
 
   repeated string photo_urls = 4;
+
+  float height = 5;
+
+  double cash = 6;
+
+  float iq = 7;
 }
 
 message TestExernalReference2Parameters {
diff --git a/generator/testfiles/other.yaml b/generator/testfiles/other.yaml
index 4c0aa15..1595ebe 100644
--- a/generator/testfiles/other.yaml
+++ b/generator/testfiles/other.yaml
@@ -90,4 +90,12 @@ components:
             name: photoUrl
             wrapped: true
           items:
-            type: string
\ No newline at end of file
+            type: string
+        height:
+          type: number
+        cash:
+          type: number
+          format: double
+        iq:
+          type: number
+          format: float
\ No newline at end of file
diff --git a/go.mod b/go.mod
index 55caa27..7b2886b 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.13
 require (
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/golang/protobuf v1.4.2
-	github.com/googleapis/gnostic v0.4.2-0.20200520192801-89741bb7d0e0
+	github.com/googleapis/gnostic v0.5.1
 	github.com/grpc-ecosystem/grpc-gateway v1.12.2
 	github.com/jhump/protoreflect v1.6.0
 	golang.org/x/net v0.0.0-20191002035440-2ec189313ef0
diff --git a/go.sum b/go.sum
index fb9b874..eaac101 100644
--- a/go.sum
+++ b/go.sum
@@ -3,6 +3,7 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/antihax/optional v0.0.0-20180407024304-ca021399b1a6/go.mod h1:V8iCPQYkqmusNa815XgQio277wI47sdRh1dUOLdyC6Q=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815/go.mod h1:WwZ+bS3ebgob9U8Nd0kOddGdZWjyMGR8Wziv+TBNwSE=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
@@ -34,6 +35,8 @@ github.com/googleapis/gnostic v0.4.2-0.20200519195951-57a06a8ff3b3 h1:lH+GwKj0oE
 github.com/googleapis/gnostic v0.4.2-0.20200519195951-57a06a8ff3b3/go.mod h1:66LN4oFEjss7jBuyFHfz9jIXKCPM+TQnz5GybKvhVQI=
 github.com/googleapis/gnostic v0.4.2-0.20200520192801-89741bb7d0e0 h1:qM69YZMWsPLR3GyzAcQPjwONfVC+eqKtHOLc2hWyJvs=
 github.com/googleapis/gnostic v0.4.2-0.20200520192801-89741bb7d0e0/go.mod h1:66LN4oFEjss7jBuyFHfz9jIXKCPM+TQnz5GybKvhVQI=
+github.com/googleapis/gnostic v0.5.1 h1:A8Yhf6EtqTv9RMsU6MQTyrtV1TjWlR6xU9BsZIwuTCM=
+github.com/googleapis/gnostic v0.5.1/go.mod h1:6U4PtQXGIEt/Z3h5MAT7FNofLnw9vXk2cUuW7uA/OeU=
 github.com/grpc-ecosystem/grpc-gateway v1.12.2 h1:D0EVSTwQoQOyfY35QNSuPJA4jpZRtkoGYWQMB7XNg5o=
 github.com/grpc-ecosystem/grpc-gateway v1.12.2/go.mod h1:8XEsbTttt/W+VvjtQhLACqCisSPWTxCZ7sBRjU6iH9c=
 github.com/jhump/protoreflect v1.6.0 h1:h5jfMVslIg6l29nsMs0D8Wj17RDVdNYti0vDN/PZZoE=
@@ -43,8 +46,12 @@ github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfn
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
+github.com/stoewer/go-strcase v1.2.0/go.mod h1:IBiWB2sKIp3wVVQ3Y035++gc+knqhUQag1KpM8ahLw8=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -107,5 +114,7 @@ gopkg.in/yaml.v2 v2.2.3 h1:fvjTMHxHEw/mxHbtzPi3JCcKXQRAnQTBRo6YCJSVHKI=
 gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 h1:tQIYjPdBoyREyB9XMu+nnTclpTYkz2zFM+lzLJFO4gQ=
+gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=