diff --git a/Dockerfile b/Dockerfile
index f9e6d70..4e617fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,4 +3,6 @@
 
 FROM registry.dege.au/leenooks/php:8.3-fpm-pgsql
 
-RUN docker-php-ext-install -j$(nproc) sockets pcntl
+RUN apk --no-cache add linux-headers \
+ && docker-php-ext-install -j$(nproc) sockets pcntl \
+ && apk --no-cache del linux-headers