diff --git a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.js
index 844ac7698297..b98f46a9feea 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.js
@@ -24,6 +24,7 @@ var bench = require( '@stdlib/bench' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var dsumors = require( './../lib/dsumors.js' );
 
@@ -95,7 +96,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+':len='+len, f );
+		bench( format( '%s:len=%d', pkg, len ), f );
 	}
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.native.js
index 5b59457080c1..9ca8de623520 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.native.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.native.js
@@ -26,6 +26,7 @@ var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 
 
@@ -100,7 +101,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::native:len='+len, opts, f );
+		bench( format( '%s::native:len=%d', pkg, len ), opts, f );
 	}
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.js
index b567144b1fe7..d3ea2ef41c3e 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.js
@@ -24,6 +24,7 @@ var bench = require( '@stdlib/bench' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var dsumors = require( './../lib/ndarray.js' );
 
@@ -95,7 +96,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+':ndarray:len='+len, f );
+		bench( format( '%s:ndarray:len=%d', pkg, len ), f );
 	}
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.native.js
index f221363a44c6..434fda969465 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.native.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dsumors/benchmark/benchmark.ndarray.native.js
@@ -26,6 +26,7 @@ var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 
 
@@ -100,7 +101,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::native:ndarray:len='+len, opts, f );
+		bench( format( '%s::native:ndarray:len=%d', pkg, len ), opts, f );
 	}
 }