diff --git a/types/d3-brush/d3-brush-tests.ts b/types/d3-brush/d3-brush-tests.ts
index c5a287b562..3df845d881 100644
--- a/types/d3-brush/d3-brush-tests.ts
+++ b/types/d3-brush/d3-brush-tests.ts
@@ -57,6 +57,12 @@ brush = brush.filter(function(d, i, group) {
 let filterFn: (this: SVGGElement, d: BrushDatum, index: number, group: SVGGElement[]) => boolean;
 filterFn = brush.filter();
 
+// keyModifiers() ----------------------------------------------------------------
+
+// chainable
+brush = brush.keyModifiers(true);
+const keyModifiers: boolean = brush.keyModifiers();
+
 // handleSize() ----------------------------------------------------------------
 
 // chainable
diff --git a/types/d3-brush/index.d.ts b/types/d3-brush/index.d.ts
index 89731cb3d2..c656bf8935 100644
--- a/types/d3-brush/index.d.ts
+++ b/types/d3-brush/index.d.ts
@@ -1,10 +1,10 @@
-// Type definitions for D3JS d3-brush module 1.0
+// Type definitions for D3JS d3-brush module 1.1
 // Project: https://github.com/d3/d3-brush/, https://d3js.org/d3-brush
 // Definitions by: Tom Wanzek <https://github.com/tomwanzek>, Alex Ford <https://github.com/gustavderdrache>, Boris Yankov <https://github.com/borisyankov>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
-// Last module patch version validated against: 1.0.3
+// Last module patch version validated against: 1.1.5
 
 import { ArrayLike, Selection, TransitionLike, ValueFn } from 'd3-selection';
 
@@ -138,6 +138,20 @@ export interface BrushBehavior<Datum> {
      */
     filter(filterFn: ValueFn<SVGGElement, Datum, boolean>): this;
 
+    /**
+     * Returns the current key modifiers flag.
+     */
+    keyModifiers(): boolean;
+    /**
+     * Sets the key modifiers flag and returns the brush.
+     *
+     * The key modifiers flag determines whether the brush listens to key events during brushing.
+     * The default value is true.
+     *
+     * @param keyModifiers New value for key modifiers flag.
+     */
+    keyModifiers(modifiers: boolean): this;
+
     /**
      * Returns the current handle size, which defaults to six.
      */