diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md b/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md
index 568d0f575d6a..7178bf295021 100644
--- a/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md
+++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/README.md
@@ -511,6 +511,54 @@ var count = context.count;
 // returns 3
 ```
 
+<a name="method-find-last-index"></a>
+
+#### TypedArray.prototype.findLastIndex( predicate\[, thisArg] )
+
+Returns the index of the last element in an array for which a predicate function returns a truthy value.
+
+```javascript
+function predicate( v ) {
+    return v % 2 !== 0;
+}
+
+var Float64ArrayFE = fixedEndianFactory( 'float64' );
+
+var arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 2.0 ] );
+
+var out = arr.findLastIndex( predicate );
+// returns 2
+```
+  
+The `predicate` function is provided three arguments:
+
+-   **value**: current array element.
+-   **index**: current array element index.
+-   **arr**: the array on which this method was called.
+
+To set the function execution context, provide a `thisArg`.
+  
+```javascript
+function predicate( v ) {
+    this.count += 1;
+    return v % 2 !== 0;
+}
+
+var Float64ArrayFE = fixedEndianFactory( 'float64' );
+
+var arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 2.0 ] );
+
+var context = {
+    'count': 0
+};
+
+var out = arr.findLastIndex( predicate, context );
+// returns 2
+
+var count = context.count;
+// returns 3
+```
+
 <a name="method-get"></a>
 
 #### TypedArrayFE.prototype.get( i )
diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.find_last_index.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.find_last_index.js
new file mode 100644
index 000000000000..a68d43f2e347
--- /dev/null
+++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.find_last_index.js
@@ -0,0 +1,60 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var pkg = require( './../package.json' ).name;
+var factory = require( './../lib' );
+
+
+// VARIABLES //
+
+var Float64ArrayFE = factory( 'float64' );
+
+
+// MAIN //
+
+bench( pkg+':findLastIndex', function benchmark( b ) {
+	var arr;
+	var out;
+	var i;
+
+	arr = new Float64ArrayFE( 'little-endian', [ 1.0, 2.0, 2.0, 4.0 ] );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		out = arr.findLastIndex( predicate );
+		if ( typeof out !== 'number' ) {
+			b.fail( 'should return a number' );
+		}
+	}
+	b.toc();
+	if ( !isInteger( out ) ) {
+		b.fail( 'should return an integer' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+
+	function predicate( v ) {
+		return v < 0;
+	}
+});
diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.find_last_index.length.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.find_last_index.length.js
new file mode 100644
index 000000000000..2899b5c60ce5
--- /dev/null
+++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/benchmark/benchmark.find_last_index.length.js
@@ -0,0 +1,113 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var zeroTo = require( '@stdlib/array/zero-to' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var pkg = require( './../package.json' ).name;
+var factory = require( './../lib' );
+
+
+// VARIABLES //
+
+var Float64ArrayFE = factory( 'float64' );
+
+
+// FUNCTIONS //
+
+/**
+* Predicate function.
+*
+* @private
+* @param {number} value - array element
+* @param {NonNegativeInteger} idx - array element index
+* @param {TypedArray} arr - array instance
+* @returns {boolean} boolean indicating whether a value passes a test
+*/
+function predicate( value ) {
+	return value < 0;
+}
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var arr = new Float64ArrayFE( 'little-endian', zeroTo( len ) );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var out;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = arr.findLastIndex( predicate );
+			if ( typeof out !== 'number' ) {
+				b.fail( 'should return a number' );
+			}
+		}
+		b.toc();
+		if ( !isInteger( out ) ) {
+			b.fail( 'should return an integer' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+':findLastIndex:len='+len, f );
+	}
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js
index b1899599583e..05b661191aee 100644
--- a/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js
+++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js
@@ -644,6 +644,37 @@ function factory( dtype ) { // eslint-disable-line max-lines-per-function, stdli
 		}
 	});
 
+	/**
+	* Returns the index of the last element in an array for which a predicate function returns a truthy value.
+	*
+	* @private
+	* @name findLastIndex
+	* @memberof TypedArray.prototype
+	* @type {Function}
+	* @param {Function} predicate - predicate function
+	* @param {*} [thisArg] - predicate function execution context
+	* @throws {TypeError} `this` must be a typed array
+	* @throws {TypeError} first argument must be a function
+	* @returns {integer} index or -1
+	*/
+	setReadOnly( TypedArray.prototype, 'findLastIndex', function findLastIndex( predicate, thisArg ) {
+		var buf;
+		var i;
+		if ( !isTypedArray( this ) ) {
+			throw new TypeError( format( 'invalid invocation. `this` is not %s %s.', CHAR2ARTICLE[ dtype[0] ], CTOR_NAME ) );
+		}
+		if ( !isFunction( predicate ) ) {
+			throw new TypeError( format( 'invalid argument. First argument must be a function. Value: `%s`.', predicate ) );
+		}
+		buf = this._buffer;
+		for ( i = this._length - 1; i >= 0; i-- ) {
+			if ( predicate.call( thisArg, buf[ GETTER ]( i * BYTES_PER_ELEMENT, this._isLE ), i, this ) ) {
+				return i;
+			}
+		}
+		return -1;
+	});
+
 	/**
 	* Returns an array element.
 	*
diff --git a/lib/node_modules/@stdlib/array/fixed-endian-factory/test/test.find_last_index.js b/lib/node_modules/@stdlib/array/fixed-endian-factory/test/test.find_last_index.js
new file mode 100644
index 000000000000..ce03e26aca94
--- /dev/null
+++ b/lib/node_modules/@stdlib/array/fixed-endian-factory/test/test.find_last_index.js
@@ -0,0 +1,191 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var hasOwnProp = require( '@stdlib/assert/has-own-property' );
+var isFunction = require( '@stdlib/assert/is-function' );
+var factory = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof factory, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function returns a function', function test( t ) {
+	var ctor = factory( 'float64' );
+	t.strictEqual( isFunction( ctor ), true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'attached to the prototype of the returned function is a `findLastIndex` method', function test( t ) {
+	var ctor = factory( 'float64' );
+	t.strictEqual( hasOwnProp( ctor.prototype, 'findLastIndex' ), true, 'returns expected value' );
+	t.strictEqual( isFunction( ctor.prototype.findLastIndex ), true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the method throws an error if invoked with a `this` context which is not a typed array instance', function test( t ) {
+	var values;
+	var ctor;
+	var arr;
+	var i;
+
+	ctor = factory( 'float64' );
+	arr = new ctor( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
+
+	values = [
+		'5',
+		5,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		{},
+		[],
+		function noop() {}
+	];
+	for ( i = 0; i < values.length; i++ ) {
+		t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+	}
+	t.end();
+
+	function badValue( value ) {
+		return function badValue() {
+			return arr.findLastIndex.call( value, predicate );
+		};
+	}
+	function predicate( v ) {
+		return v < 0;
+	}
+});
+
+tape( 'the method throws an error if provided a first argument which is not a function', function test( t ) {
+	var values;
+	var ctor;
+	var arr;
+	var i;
+
+	ctor = factory( 'float64' );
+	arr = new ctor( 'little-endian', [ 1.0, 2.0, 3.0, 4.0 ] );
+
+	values = [
+		'5',
+		3.14,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		{},
+		[]
+	];
+	for ( i = 0; i < values.length; i++ ) {
+		t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+	}
+	t.end();
+
+	function badValue( value ) {
+		return function badValue() {
+			return arr.findLastIndex( value );
+		};
+	}
+});
+
+tape( 'the method returns `-1` if operating on an empty array', function test( t ) {
+	var ctor;
+	var arr;
+	var out;
+
+	ctor = factory( 'float64' );
+	arr = new ctor( 'little-endian' );
+	out = arr.findLastIndex( predicate );
+
+	t.strictEqual( out, -1, 'returns expected value' );
+	t.end();
+
+	function predicate() {
+		t.fail( 'should not be invoked' );
+	}
+});
+
+tape( 'the method returns the index of the last element which passes a test', function test( t ) {
+	var ctor;
+	var arr;
+	var out;
+
+	ctor = factory( 'float64' );
+	arr = new ctor( 'little-endian', [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
+	out = arr.findLastIndex( predicate );
+
+	t.strictEqual( out, 3, 'returns expected value' );
+	t.end();
+
+	function predicate( v ) {
+		return v % 2 === 0;
+	}
+});
+
+tape( 'the method returns `-1` if all elements fail a test', function test( t ) {
+	var ctor;
+	var arr;
+	var out;
+
+	ctor = factory( 'float64' );
+	arr = new ctor( 'little-endian', [ 1.0, 3.0, 5.0, 7.0, 9.0 ] );
+	out = arr.findLastIndex( predicate );
+
+	t.strictEqual( out, -1, 'returns expected value' );
+	t.end();
+
+	function predicate( v ) {
+		return v % 2 === 0;
+	}
+});
+
+tape( 'the method supports providing an execution context', function test( t ) {
+	var ctor;
+	var arr;
+	var ctx;
+	var out;
+
+	ctx = {
+		'count': 0
+	};
+	ctor = factory( 'float64' );
+	arr = new ctor( 'little-endian', [ 1.0, 8.0, 6.0, 4.0, 2.0 ] );
+	out = arr.findLastIndex( predicate, ctx );
+
+	t.strictEqual( out, 0, 'returns expected value' );
+	t.strictEqual( ctx.count, 5, 'returns expected value' );
+
+	t.end();
+
+	function predicate( v ) {
+		this.count += 1; // eslint-disable-line no-invalid-this
+		return ( v % 2 !== 0 );
+	}
+});