diff --git a/8.3/Dockerfile b/8.3/Dockerfile
index a1f06bd..a43170e 100644
--- a/8.3/Dockerfile
+++ b/8.3/Dockerfile
@@ -11,6 +11,12 @@ RUN apt update \
  && apt auto-remove -y \
  && apt clean -y
 
+# Install dependencies for intl extension
+RUN apt-get update && apt-get install -y \
+    libicu-dev \
+    && docker-php-ext-configure intl \
+    && docker-php-ext-install intl
+
 RUN docker-php-ext-install {mysqli,pdo,pdo_mysql,bcmath,intl,gd,zip}
 
 # Copy php.ini config