diff --git a/composer.json b/composer.json
index 7b3ab6487..f5deaa9c3 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,7 @@
     "type": "project",
     "require": {
         "php": "^7.2",
+        "ext-bcmath": "*",
         "akaunting/firewall": "1.2.*",
         "akaunting/language": "1.0.*",
         "akaunting/menu": "1.0.*",
diff --git a/composer.lock b/composer.lock
index 478b51675..d531cb2ef 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f3cd099f0849563142edd289998d8bd9",
+    "content-hash": "6215fc14abaa7d8b9299f201ffef54aa",
     "packages": [
         {
             "name": "akaunting/firewall",
@@ -8990,7 +8990,8 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.2"
+        "php": "^7.2",
+        "ext-bcmath": "*"
     },
     "platform-dev": []
 }