diff --git a/runtimes/7.4/Dockerfile b/runtimes/7.4/Dockerfile
index ee2a566f..2409067c 100644
--- a/runtimes/7.4/Dockerfile
+++ b/runtimes/7.4/Dockerfile
@@ -29,7 +29,7 @@ RUN apt-get update \
        php7.4-intl php7.4-readline php7.4-pcov \
        php7.4-msgpack php7.4-igbinary php7.4-ldap \
        php7.4-redis php7.4-xdebug \
-    && php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
+    && php -r "readfile('https://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
     && curl -sL https://deb.nodesource.com/setup_$NODE_VERSION.x | bash - \
     && apt-get install -y nodejs \
     && npm install -g npm \
diff --git a/runtimes/8.0/Dockerfile b/runtimes/8.0/Dockerfile
index bfc9e3ce..950262cd 100644
--- a/runtimes/8.0/Dockerfile
+++ b/runtimes/8.0/Dockerfile
@@ -29,7 +29,7 @@ RUN apt-get update \
        php8.0-intl php8.0-readline php8.0-pcov \
        php8.0-msgpack php8.0-igbinary php8.0-ldap \
        php8.0-redis php8.0-swoole php8.0-xdebug \
-    && php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
+    && php -r "readfile('https://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
     && curl -sL https://deb.nodesource.com/setup_$NODE_VERSION.x | bash - \
     && apt-get install -y nodejs \
     && npm install -g npm \
diff --git a/runtimes/8.1/Dockerfile b/runtimes/8.1/Dockerfile
index aa63765c..8318df5d 100644
--- a/runtimes/8.1/Dockerfile
+++ b/runtimes/8.1/Dockerfile
@@ -30,7 +30,7 @@ RUN apt-get update \
        php8.1-ldap \
        php8.1-msgpack php8.1-igbinary php8.1-redis php8.1-swoole \
        php8.1-memcached php8.1-pcov php8.1-xdebug \
-    && php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
+    && php -r "readfile('https://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
     && curl -sL https://deb.nodesource.com/setup_$NODE_VERSION.x | bash - \
     && apt-get install -y nodejs \
     && npm install -g npm \