modal-install-popper.diff

diff --git a/package.json b/package.json
index a9ef887..5fa1f17 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,7 @@
 {
     "devDependencies": {
         "@babel/preset-react": "^7.0.0",
+        "@popperjs/core": "^2.9.1",
         "@symfony/stimulus-bridge": "^2.0.0",
         "@symfony/ux-chartjs": "file:vendor/symfony/ux-chartjs/Resources/assets",
         "@symfony/webpack-encore": "^1.0.0",
diff --git a/yarn.lock b/yarn.lock
index e1947bb..8a1ba0a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -894,6 +894,11 @@
   resolved "https://registry.yarnpkg.com/@polka/url/-/url-1.0.0-next.11.tgz#aeb16f50649a91af79dbe36574b66d0f9e4d9f71"
   integrity sha512-3NsZsJIA/22P3QUyrEDNA2D133H4j224twJrdipXN38dpnIOzAbUDtOwkcJ5pXmn75w7LSQDjA4tO9dm1XlqlA==
 
+"@popperjs/core@^2.9.1":
+  version "2.9.1"
+  resolved "https://registry.yarnpkg.com/@popperjs/core/-/core-2.9.1.tgz#7f554e7368c9ab679a11f4a042ca17149d70cf12"
+  integrity sha512-DvJbbn3dUgMxDnJLH+RZQPnXak1h4ZVYQ7CWiFWjQwBFkVajT4rfw2PdpHLTSTwxrYfnoEXkuBiwkDm6tPMQeA==
+
 "@stimulus/core@^2.0.0":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@stimulus/core/-/core-2.0.0.tgz#140c85318d6a8a8210c0faf182223b8459348877"