diff --git a/heroku-24-build/installed-packages-amd64.txt b/heroku-24-build/installed-packages-amd64.txt
index f62d3fdb..c3ae7257 100644
--- a/heroku-24-build/installed-packages-amd64.txt
+++ b/heroku-24-build/installed-packages-amd64.txt
@@ -300,8 +300,6 @@ libmagickwand-6.q16-dev
 libmagickwand-dev
 libmatio11
 libmaxminddb0
-libmcrypt-dev
-libmcrypt4
 libmd-dev
 libmd0
 libmemcached-dev
diff --git a/heroku-24-build/installed-packages-arm64.txt b/heroku-24-build/installed-packages-arm64.txt
index be525658..dc8f8367 100644
--- a/heroku-24-build/installed-packages-arm64.txt
+++ b/heroku-24-build/installed-packages-arm64.txt
@@ -293,8 +293,6 @@ libmagickwand-6.q16-dev
 libmagickwand-dev
 libmatio11
 libmaxminddb0
-libmcrypt-dev
-libmcrypt4
 libmd-dev
 libmd0
 libmemcached-dev
diff --git a/heroku-24-build/setup.sh b/heroku-24-build/setup.sh
index 9bcd6976..3c596542 100755
--- a/heroku-24-build/setup.sh
+++ b/heroku-24-build/setup.sh
@@ -39,7 +39,6 @@ packages=(
   liblzf-dev
   libmagic-dev
   libmagickwand-dev
-  libmcrypt-dev
   libmemcached-dev
   libmysqlclient-dev
   libnetpbm10-dev
diff --git a/heroku-24/installed-packages-amd64.txt b/heroku-24/installed-packages-amd64.txt
index 7830049c..316500a3 100644
--- a/heroku-24/installed-packages-amd64.txt
+++ b/heroku-24/installed-packages-amd64.txt
@@ -163,7 +163,6 @@ libmagickcore-6.q16-7t64
 libmagickwand-6.q16-7t64
 libmatio11
 libmaxminddb0
-libmcrypt4
 libmd0
 libmemcached11t64
 libmnl0
diff --git a/heroku-24/installed-packages-arm64.txt b/heroku-24/installed-packages-arm64.txt
index 7830049c..316500a3 100644
--- a/heroku-24/installed-packages-arm64.txt
+++ b/heroku-24/installed-packages-arm64.txt
@@ -163,7 +163,6 @@ libmagickcore-6.q16-7t64
 libmagickwand-6.q16-7t64
 libmatio11
 libmaxminddb0
-libmcrypt4
 libmd0
 libmemcached11t64
 libmnl0
diff --git a/heroku-24/setup.sh b/heroku-24/setup.sh
index fc921884..29e98544 100755
--- a/heroku-24/setup.sh
+++ b/heroku-24/setup.sh
@@ -68,7 +68,6 @@ packages=(
   libharfbuzz-icu0 # Used by FFmpeg in heroku-buildpack-activestorage-preview.
   liblzf1 # Used by the PHP Redis extension.
   libmagickcore-6.q16-7-extra # Used by the PHP Imagick extension (using the `-extra` package for SVG support).
-  libmcrypt4
   libmemcached11 # Used by the PHP Memcached extension.
   libmp3lame0 # Used by FFmpeg in heroku-buildpack-activestorage-preview.
   libmysqlclient21