diff --git a/.github/workflows/build-phar-release.yml b/.github/workflows/build-phar-release.yml
index a0a9e2f..1cfd073 100644
--- a/.github/workflows/build-phar-release.yml
+++ b/.github/workflows/build-phar-release.yml
@@ -31,7 +31,7 @@ jobs:
         uses: shivammathur/setup-php@2.33.0
         with:
           php-version: ${{ matrix.php-version }}
-          extensions: none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter, sockets, intl
+          extensions: none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter, sockets, intl, bcmath
           ini-values: error_reporting=E_ALL
           coverage: none
           tools: phive