diff --git a/lib/assign.js b/lib/assign.js
index 1f8c96d..d040183 100644
--- a/lib/assign.js
+++ b/lib/assign.js
@@ -26,7 +26,7 @@ var arraylike2object = require( '@stdlib/array-base-arraylike2object' );
 var reinterpret = require( '@stdlib/strided-base-reinterpret-complex' );
 var reinterpretBoolean = require( '@stdlib/strided-base-reinterpret-boolean' );
 var normalizeIndex = require( '@stdlib/ndarray-base-normalize-index' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 
 
 // FUNCTIONS //
diff --git a/lib/main.js b/lib/main.js
index 90d165c..803a557 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -23,7 +23,7 @@
 var normalizeIndex = require( '@stdlib/ndarray-base-normalize-index' );
 var zeros = require( '@stdlib/array-zeros' );
 var dtype = require( '@stdlib/array-dtype' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 var assign = require( './assign.js' );
 
 
diff --git a/package.json b/package.json
index 5a3a3fc..ab38a46 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "@stdlib/ndarray-base-normalize-index": "^0.2.3",
     "@stdlib/strided-base-reinterpret-boolean": "^0.0.3",
     "@stdlib/strided-base-reinterpret-complex": "^0.1.3",
-    "@stdlib/string-format": "^0.2.3",
+    "@stdlib/error-tools-fmtprodmsg": "^0.2.3",
     "@stdlib/types": "^0.5.1",
     "@stdlib/utils-define-nonenumerable-read-only-property": "^0.2.3",
     "@stdlib/error-tools-fmtprodmsg": "^0.2.3"