diff --git a/composer.json b/composer.json
index 2348d4b..c2c98c0 100644
--- a/composer.json
+++ b/composer.json
@@ -19,10 +19,12 @@
     "ext-openssl": "*",
     "ext-curl": "*",
     "ext-json": "*",
-    "ext-iconv": "*",
-    "ext-gmp": "*"
+    "ext-iconv": "*"
   },
   "require-dev": {
     "phpunit/phpunit": "^7.5 || ^9.0"
+  },
+  "suggest": {
+    "ext-gmp": "Required to use this package with GMP instead of BCMath"
   }
 }
diff --git a/test/unit/BitPayKeyUtils/Storage/test1.txt b/test/unit/BitPayKeyUtils/Storage/test1.txt
index 6b6e7b3..46f07be 100755
--- a/test/unit/BitPayKeyUtils/Storage/test1.txt
+++ b/test/unit/BitPayKeyUtils/Storage/test1.txt
@@ -1 +1 @@
-O:17:"Mock_Key_7dd5a46d":0:{}
\ No newline at end of file
+O:17:"Mock_Key_c1e4b2bf":0:{}
\ No newline at end of file
diff --git a/test/unit/BitPayKeyUtils/Storage/test11.txt b/test/unit/BitPayKeyUtils/Storage/test11.txt
index 4068866..92c1ed0 100644
--- a/test/unit/BitPayKeyUtils/Storage/test11.txt
+++ b/test/unit/BitPayKeyUtils/Storage/test11.txt
@@ -1 +1 @@
-c31eda5dd0eb0a1f93800db68d1ae0fd60daae108ae31cc034711b4a0e7bcebe
\ No newline at end of file
+a2c2ae8c5cd35cc02dfeef6309593cfe0ddcd995e6de235a033c889bc2c23299
\ No newline at end of file