diff --git a/php-fpm/Dockerfile b/php-fpm/Dockerfile
index bcf53b1..fc2228b 100644
--- a/php-fpm/Dockerfile
+++ b/php-fpm/Dockerfile
@@ -1090,9 +1090,9 @@ ARG INSTALL_CACHETOOL=false
 
 RUN if [ ${INSTALL_CACHETOOL} = true ]; then \
     if [ $(php -r "echo PHP_MAJOR_VERSION;") = "7" ] && [ $(php -r "echo PHP_MINOR_VERSION;") -ge 1 ]; then \
-            curl -sO http://gordalina.github.io/cachetool/downloads/cachetool.phar; \
+            curl -sO https://gordalina.github.io/cachetool/downloads/cachetool.phar; \
     else \
-        curl http://gordalina.github.io/cachetool/downloads/cachetool-3.2.1.phar -o cachetool.phar; \
+        curl https://gordalina.github.io/cachetool/downloads/cachetool-3.2.1.phar -o cachetool.phar; \
     fi && \
     chmod +x cachetool.phar && \
     mv cachetool.phar /usr/local/bin/cachetool \