diff --git a/addons/xterm-addon-attach/.npmignore b/addons/xterm-addon-attach/.npmignore
index 6e2d3d99..e8fc8237 100644
--- a/addons/xterm-addon-attach/.npmignore
+++ b/addons/xterm-addon-attach/.npmignore
@@ -1,3 +1,4 @@
 **/*.api.js
 **/*.api.ts
 tsconfig.json
+.yarnrc
diff --git a/addons/xterm-addon-fit/.npmignore b/addons/xterm-addon-fit/.npmignore
index 6e2d3d99..e8fc8237 100644
--- a/addons/xterm-addon-fit/.npmignore
+++ b/addons/xterm-addon-fit/.npmignore
@@ -1,3 +1,4 @@
 **/*.api.js
 **/*.api.ts
 tsconfig.json
+.yarnrc
diff --git a/addons/xterm-addon-search/.npmignore b/addons/xterm-addon-search/.npmignore
index 6e2d3d99..e8fc8237 100644
--- a/addons/xterm-addon-search/.npmignore
+++ b/addons/xterm-addon-search/.npmignore
@@ -1,3 +1,4 @@
 **/*.api.js
 **/*.api.ts
 tsconfig.json
+.yarnrc
diff --git a/addons/xterm-addon-web-links/.npmignore b/addons/xterm-addon-web-links/.npmignore
index 6e2d3d99..e8fc8237 100644
--- a/addons/xterm-addon-web-links/.npmignore
+++ b/addons/xterm-addon-web-links/.npmignore
@@ -1,3 +1,4 @@
 **/*.api.js
 **/*.api.ts
 tsconfig.json
+.yarnrc