diff --git a/README.md b/README.md
index 0b18295..bbc81f7 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@
 | nginx | ✅ Engine X | ❌ ngx |
 | null [🔊](http://dict.youdao.com/dictvoice?audio=null&type=2) | ✅ [nʌl] | ❌ [naʊ] |
 | OS X | ✅ OS ten | ❌ OS X |
+| parameter [🔊](http://dict.youdao.com/dictvoice?audio=parameter&type=2) | ✅ [pə'ræmɪtə] | ❌ ['pærəmɪtə] |
 | retina [🔊](http://dict.youdao.com/dictvoice?audio=retina&type=2) | ✅ ['retɪnə; ˈretənə; 'retnə] | ❌ [ritina] |
 | safari [🔊](http://dict.youdao.com/dictvoice?audio=safari&type=2) | ✅ [səˈfɑːrɪ] | ❌ [sæfərɪ] |
 | sudo | ✅ ['su:du:] | |