diff --git a/types/google-apps-script/google-apps-script.card-service.d.ts b/types/google-apps-script/google-apps-script.card-service.d.ts
index 76caae381e..d097edc957 100644
--- a/types/google-apps-script/google-apps-script.card-service.d.ts
+++ b/types/google-apps-script/google-apps-script.card-service.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Google Apps Script 2019-04-09
+// Type definitions for Google Apps Script 2019-05-20
 // Project: https://developers.google.com/apps-script/
 // Definitions by: motemen <https://github.com/motemen/>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -388,7 +388,7 @@ declare namespace GoogleAppsScript {
      *     var multilineKeyValue = CardService.newKeyValue()
      *         .setTopLabel("Top label - single line)")
      *         .setContent("Content can be multiple lines")
-     *     .setMultiline(true)
+     *         .setMultiline(true)
      *         .setBottomLabel("Bottom label - single line");
      */
     export interface KeyValue {
@@ -444,11 +444,6 @@ declare namespace GoogleAppsScript {
       setText(text: string): Notification;
     }
 
-    /**
-     * Type of notification to show.
-     */
-    export enum NotificationType { INFO, ERROR, WARNING }
-
     /**
      * An enum that specifies what to do when a URL opened through an OpenLink is closed.
      *
diff --git a/types/google-apps-script/google-apps-script.data-studio.d.ts b/types/google-apps-script/google-apps-script.data-studio.d.ts
index 2f5614e343..fbb7133b96 100644
--- a/types/google-apps-script/google-apps-script.data-studio.d.ts
+++ b/types/google-apps-script/google-apps-script.data-studio.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Google Apps Script 2019-04-26
+// Type definitions for Google Apps Script 2019-05-20
 // Project: https://developers.google.com/apps-script/
 // Definitions by: motemen <https://github.com/motemen/>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -78,7 +78,7 @@ declare namespace GoogleAppsScript {
      *
      *     fields.newMetric()
      *       .setAggregation(aggregationType.AVG)
-     *       .setFieldType(fieldType.CURRENCY_USD);
+     *       .setType(fieldType.CURRENCY_USD);
      */
     export interface CommunityConnector {
       AggregationType: typeof AggregationType;
diff --git a/types/google-apps-script/google-apps-script.gmail.d.ts b/types/google-apps-script/google-apps-script.gmail.d.ts
index 1bac0a7021..fd687b9275 100644
--- a/types/google-apps-script/google-apps-script.gmail.d.ts
+++ b/types/google-apps-script/google-apps-script.gmail.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Google Apps Script 2018-12-26
+// Type definitions for Google Apps Script 2019-05-20
 // Project: https://developers.google.com/apps-script/
 // Definitions by: motemen <https://github.com/motemen/>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -204,7 +204,7 @@ declare namespace GoogleAppsScript {
        * A comma-separated list of email addresses to BCC.
        */
     }
-    
+
     /**
      * A user-created label in a user's Gmail account.
      */
diff --git a/types/google-apps-script/google-apps-script.optimization.d.ts b/types/google-apps-script/google-apps-script.optimization.d.ts
index 92fecb8619..8a396f1a8f 100644
--- a/types/google-apps-script/google-apps-script.optimization.d.ts
+++ b/types/google-apps-script/google-apps-script.optimization.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Google Apps Script 2018-07-11
+// Type definitions for Google Apps Script 2019-05-20
 // Project: https://developers.google.com/apps-script/
 // Definitions by: motemen <https://github.com/motemen/>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -84,9 +84,11 @@ declare namespace GoogleAppsScript {
      */
     export interface LinearOptimizationEngine {
       addConstraint(lowerBound: Number, upperBound: Number): LinearOptimizationConstraint;
+      addConstraints(lowerBounds: Number[], upperBounds: Number[], variableNames: string[][], coefficients: Number[][]): LinearOptimizationEngine;
       addVariable(name: string, lowerBound: Number, upperBound: Number): LinearOptimizationEngine;
       addVariable(name: string, lowerBound: Number, upperBound: Number, type: VariableType): LinearOptimizationEngine;
       addVariable(name: string, lowerBound: Number, upperBound: Number, type: VariableType, objectiveCoefficient: Number): LinearOptimizationEngine;
+      addVariables(names: string[], lowerBounds: Number[], upperBounds: Number[], types: VariableType[], objectiveCoefficients: Number[]): LinearOptimizationEngine;
       setMaximization(): LinearOptimizationEngine;
       setMinimization(): LinearOptimizationEngine;
       setObjectiveCoefficient(variableName: string, coefficient: Number): LinearOptimizationEngine;