diff --git a/Dockerfile.fpm b/Dockerfile.fpm
index 76cdc38..d683e52 100644
--- a/Dockerfile.fpm
+++ b/Dockerfile.fpm
@@ -9,7 +9,7 @@ FROM composer:$COMPOSER_VERSION AS local-composer
 FROM php:$PHP_VERSION-fpm-alpine$ALPINE_VERSION AS base
 WORKDIR /app
 
-COPY --from=mlocati/php-extension-installer:2.11.8 /usr/bin/install-php-extensions /usr/bin/
+COPY --from=mlocati/php-extension-installer:2.11.9 /usr/bin/install-php-extensions /usr/bin/
 
 RUN <<EOT
   set -eux
diff --git a/Dockerfile.rr b/Dockerfile.rr
index b166aa4..5382182 100644
--- a/Dockerfile.rr
+++ b/Dockerfile.rr
@@ -8,7 +8,7 @@ FROM composer:$COMPOSER_VERSION AS local-composer
 
 FROM php:$PHP_VERSION-cli-alpine$ALPINE_VERSION AS base
 
-COPY --from=mlocati/php-extension-installer:2.11.8 /usr/bin/install-php-extensions /usr/bin/
+COPY --from=mlocati/php-extension-installer:2.11.9 /usr/bin/install-php-extensions /usr/bin/
 
 RUN <<EOT
   set -eux