diff --git a/examples/examplepb/a_bit_of_everything.pb.go b/examples/examplepb/a_bit_of_everything.pb.go
index f8994b6b4a8..a7568201619 100644
--- a/examples/examplepb/a_bit_of_everything.pb.go
+++ b/examples/examplepb/a_bit_of_everything.pb.go
@@ -1034,115 +1034,129 @@ var _AnotherServiceWithNoBindings_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("examples/examplepb/a_bit_of_everything.proto", fileDescriptor1) }
 
 var fileDescriptor1 = []byte{
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+	0x4a, 0xf1, 0x79, 0xad, 0xf9, 0xf8, 0x7e, 0xed, 0x01, 0x1d, 0x92, 0x0c, 0xfc, 0x03, 0x25, 0xaf,
+	0xed, 0xdf, 0x50, 0x21, 0xab, 0xe4, 0xea, 0x57, 0x63, 0x27, 0x53, 0xbc, 0x35, 0x66, 0x04, 0xbc,
+	0xaf, 0x89, 0x7f, 0x98, 0x67, 0xfd, 0x88, 0x36, 0xd6, 0x26, 0x83, 0x38, 0x7b, 0x45, 0x9d, 0x8d,
+	0x9f, 0x42, 0x25, 0x7c, 0xbc, 0x31, 0xbe, 0xeb, 0x19, 0x0e, 0xf7, 0x89, 0x58, 0x10, 0xa3, 0xd3,
+	0xa1, 0xbe, 0x0f, 0xab, 0xd1, 0x93, 0x8e, 0x97, 0xa3, 0x43, 0xb9, 0x8a, 0x4f, 0xef, 0xc0, 0xac,
+	0x61, 0xda, 0x96, 0x83, 0x1b, 0x23, 0xa2, 0x8e, 0x39, 0x02, 0x23, 0x9c, 0x11, 0x09, 0xb3, 0x7c,
+	0x2e, 0x7a, 0xdc, 0x0e, 0x25, 0x96, 0xd3, 0x65, 0x9e, 0x2d, 0xc3, 0xd2, 0x5e, 0x83, 0xf9, 0x74,
+	0x28, 0x66, 0xc6, 0xc7, 0x8c, 0xf6, 0xf5, 0x89, 0x83, 0xc6, 0x38, 0xd4, 0xbb, 0x0f, 0x17, 0x1e,
+	0xbe, 0xce, 0xeb, 0x74, 0x6a, 0x4c, 0x9b, 0x12, 0x2f, 0x8a, 0x49, 0xcd, 0xb7, 0xf3, 0x32, 0x2b,
+	0x6f, 0xfd, 0x37, 0x00, 0x00, 0xff, 0xff, 0x7f, 0x02, 0x53, 0x7b, 0xaf, 0x16, 0x00, 0x00,
 }
diff --git a/examples/examplepb/a_bit_of_everything.swagger.json b/examples/examplepb/a_bit_of_everything.swagger.json
index a6c1f752214..02c2f892dd7 100644
--- a/examples/examplepb/a_bit_of_everything.swagger.json
+++ b/examples/examplepb/a_bit_of_everything.swagger.json
@@ -489,6 +489,15 @@
         ],
         "tags": [
           "ABitOfEverythingService"
+        ],
+        "security": [
+          {
+            "ApiKeyAuth": [],
+            "OAuth2": [
+              "read",
+              "write"
+            ]
+          }
         ]
       },
       "put": {
@@ -867,6 +876,40 @@
       }
     }
   },
+  "securityDefinitions": {
+    "ApiKeyAuth": {
+      "type": "apiKey",
+      "name": "X-API-Key",
+      "in": "header"
+    },
+    "BasicAuth": {
+      "type": "basic"
+    },
+    "OAuth2": {
+      "type": "oauth2",
+      "flow": "accessCode",
+      "authorizationUrl": "https://example.com/oauth/authorize",
+      "tokenUrl": "https://example.com/oauth/token",
+      "scopes": {
+        "admin": "Grants read and write access to administrative information",
+        "read": "Grants read access",
+        "write": "Grants write access"
+      }
+    }
+  },
+  "security": [
+    {
+      "ApiKeyAuth": [],
+      "BasicAuth": []
+    },
+    {
+      "ApiKeyAuth": [],
+      "OAuth2": [
+        "read",
+        "write"
+      ]
+    }
+  ],
   "externalDocs": {
     "description": "More about gRPC-Gateway",
     "url": "https://github.com/grpc-ecosystem/grpc-gateway"
diff --git a/protoc-gen-swagger/genswagger/template.go b/protoc-gen-swagger/genswagger/template.go
index c838a5808d7..2781a8b6e52 100644
--- a/protoc-gen-swagger/genswagger/template.go
+++ b/protoc-gen-swagger/genswagger/template.go
@@ -648,6 +648,24 @@ func renderServices(services []*descriptor.Service, paths swaggerPathsObject, re
 						operationObject.Tags = make([]string, len(opts.Tags))
 						copy(operationObject.Tags, opts.Tags)
 					}
+					if opts.Security != nil {
+						newSecurity := []swaggerSecurityRequirementObject{}
+						if operationObject.Security == nil {
+							newSecurity = []swaggerSecurityRequirementObject{}
+						} else {
+							newSecurity = operationObject.Security
+						}
+						for _, secReq := range opts.Security {
+							newSecReq := swaggerSecurityRequirementObject{}
+							for secReqKey, secReqValue := range secReq.SecurityRequirement {
+								newSecReqValue := make([]string, len(secReqValue.Scope))
+								copy(newSecReqValue, secReqValue.Scope)
+								newSecReq[secReqKey] = newSecReqValue
+							}
+							newSecurity = append(newSecurity, newSecReq)
+						}
+						operationObject.Security = newSecurity
+					}
 
 					// TODO(ivucica): add remaining fields of operation object
 				}
@@ -775,6 +793,88 @@ func applyTemplate(p param) (string, error) {
 			s.Produces = make([]string, len(spb.Produces))
 			copy(s.Produces, spb.Produces)
 		}
+		if spb.SecurityDefinitions != nil && spb.SecurityDefinitions.Security != nil {
+			if s.SecurityDefinitions == nil {
+				s.SecurityDefinitions = swaggerSecurityDefinitionsObject{}
+			}
+			for secDefKey, secDefValue := range spb.SecurityDefinitions.Security {
+				var newSecDefValue swaggerSecuritySchemeObject
+				if oldSecDefValue, ok := s.SecurityDefinitions[secDefKey]; !ok {
+					newSecDefValue = swaggerSecuritySchemeObject{}
+				} else {
+					newSecDefValue = oldSecDefValue
+				}
+				if secDefValue.Type != swagger_options.SecurityScheme_TYPE_INVALID {
+					switch secDefValue.Type {
+					case swagger_options.SecurityScheme_TYPE_BASIC:
+						newSecDefValue.Type = "basic"
+					case swagger_options.SecurityScheme_TYPE_API_KEY:
+						newSecDefValue.Type = "apiKey"
+					case swagger_options.SecurityScheme_TYPE_OAUTH2:
+						newSecDefValue.Type = "oauth2"
+					}
+				}
+				if secDefValue.Description != "" {
+					newSecDefValue.Description = secDefValue.Description
+				}
+				if secDefValue.Name != "" {
+					newSecDefValue.Name = secDefValue.Name
+				}
+				if secDefValue.In != swagger_options.SecurityScheme_IN_INVALID {
+					switch secDefValue.In {
+					case swagger_options.SecurityScheme_IN_QUERY:
+						newSecDefValue.In = "query"
+					case swagger_options.SecurityScheme_IN_HEADER:
+						newSecDefValue.In = "header"
+					}
+				}
+				if secDefValue.Flow != swagger_options.SecurityScheme_FLOW_INVALID {
+					switch secDefValue.Flow {
+					case swagger_options.SecurityScheme_FLOW_IMPLICIT:
+						newSecDefValue.Flow = "implicit"
+					case swagger_options.SecurityScheme_FLOW_PASSWORD:
+						newSecDefValue.Flow = "password"
+					case swagger_options.SecurityScheme_FLOW_APPLICATION:
+						newSecDefValue.Flow = "application"
+					case swagger_options.SecurityScheme_FLOW_ACCESS_CODE:
+						newSecDefValue.Flow = "accessCode"
+					}
+				}
+				if secDefValue.AuthorizationUrl != "" {
+					newSecDefValue.AuthorizationURL = secDefValue.AuthorizationUrl
+				}
+				if secDefValue.TokenUrl != "" {
+					newSecDefValue.TokenURL = secDefValue.TokenUrl
+				}
+				if secDefValue.Scopes != nil {
+					if newSecDefValue.Scopes == nil {
+						newSecDefValue.Scopes = swaggerScopesObject{}
+					}
+					for scopeKey, scopeDesc := range secDefValue.Scopes.Scope {
+						newSecDefValue.Scopes[scopeKey] = scopeDesc
+					}
+				}
+				s.SecurityDefinitions[secDefKey] = newSecDefValue
+			}
+		}
+		if spb.Security != nil {
+			newSecurity := []swaggerSecurityRequirementObject{}
+			if s.Security == nil {
+				newSecurity = []swaggerSecurityRequirementObject{}
+			} else {
+				newSecurity = s.Security
+			}
+			for _, secReq := range spb.Security {
+				newSecReq := swaggerSecurityRequirementObject{}
+				for secReqKey, secReqValue := range secReq.SecurityRequirement {
+					newSecReqValue := make([]string, len(secReqValue.Scope))
+					copy(newSecReqValue, secReqValue.Scope)
+					newSecReq[secReqKey] = newSecReqValue
+				}
+				newSecurity = append(newSecurity, newSecReq)
+			}
+			s.Security = newSecurity
+		}
 		if spb.ExternalDocs != nil {
 			if s.ExternalDocs == nil {
 				s.ExternalDocs = &swaggerExternalDocumentationObject{}
diff --git a/protoc-gen-swagger/genswagger/types.go b/protoc-gen-swagger/genswagger/types.go
index 35e8542083e..0c85d941135 100644
--- a/protoc-gen-swagger/genswagger/types.go
+++ b/protoc-gen-swagger/genswagger/types.go
@@ -48,17 +48,40 @@ type swaggerExternalDocumentationObject struct {
 
 // http://swagger.io/specification/#swaggerObject
 type swaggerObject struct {
-	Swagger      string                              `json:"swagger"`
-	Info         swaggerInfoObject                   `json:"info"`
-	Host         string                              `json:"host,omitempty"`
-	BasePath     string                              `json:"basePath,omitempty"`
-	Schemes      []string                            `json:"schemes"`
-	Consumes     []string                            `json:"consumes"`
-	Produces     []string                            `json:"produces"`
-	Paths        swaggerPathsObject                  `json:"paths"`
-	Definitions  swaggerDefinitionsObject            `json:"definitions"`
-	ExternalDocs *swaggerExternalDocumentationObject `json:"externalDocs,omitempty"`
-}
+	Swagger             string                              `json:"swagger"`
+	Info                swaggerInfoObject                   `json:"info"`
+	Host                string                              `json:"host,omitempty"`
+	BasePath            string                              `json:"basePath,omitempty"`
+	Schemes             []string                            `json:"schemes"`
+	Consumes            []string                            `json:"consumes"`
+	Produces            []string                            `json:"produces"`
+	Paths               swaggerPathsObject                  `json:"paths"`
+	Definitions         swaggerDefinitionsObject            `json:"definitions"`
+	SecurityDefinitions swaggerSecurityDefinitionsObject    `json:"securityDefinitions,omitempty"`
+	Security            []swaggerSecurityRequirementObject  `json:"security,omitempty"`
+	ExternalDocs        *swaggerExternalDocumentationObject `json:"externalDocs,omitempty"`
+}
+
+// http://swagger.io/specification/#securityDefinitionsObject
+type swaggerSecurityDefinitionsObject map[string]swaggerSecuritySchemeObject
+
+// http://swagger.io/specification/#securitySchemeObject
+type swaggerSecuritySchemeObject struct {
+	Type             string              `json:"type"`
+	Description      string              `json:"description,omitempty"`
+	Name             string              `json:"name,omitempty"`
+	In               string              `json:"in,omitempty"`
+	Flow             string              `json:"flow,omitempty"`
+	AuthorizationURL string              `json:"authorizationUrl,omitempty"`
+	TokenURL         string              `json:"tokenUrl,omitempty"`
+	Scopes           swaggerScopesObject `json:"scopes,omitempty"`
+}
+
+// http://swagger.io/specification/#scopesObject
+type swaggerScopesObject map[string]string
+
+// http://swagger.io/specification/#securityRequirementObject
+type swaggerSecurityRequirementObject map[string][]string
 
 // http://swagger.io/specification/#pathsObject
 type swaggerPathsObject map[string]swaggerPathItemObject
@@ -82,6 +105,7 @@ type swaggerOperationObject struct {
 	Tags        []string                `json:"tags,omitempty"`
 	Deprecated  bool                    `json:"deprecated,omitempty"`
 
+	Security     []swaggerSecurityRequirementObject  `json:"security,omitempty"`
 	ExternalDocs *swaggerExternalDocumentationObject `json:"externalDocs,omitempty"`
 }