diff --git a/runtimes/7.4/Dockerfile b/runtimes/7.4/Dockerfile
index 9ff2ea10..74ffc2ed 100644
--- a/runtimes/7.4/Dockerfile
+++ b/runtimes/7.4/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:21.04
+FROM ubuntu:21.10
 
 LABEL maintainer="Taylor Otwell"
 
@@ -19,7 +19,7 @@ RUN apt-get update \
     && echo "disable-ipv6" >> ~/.gnupg/dirmngr.conf \
     && apt-key adv --homedir ~/.gnupg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys E5267A6C \
     && apt-key adv --homedir ~/.gnupg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C300EE8C \
-    && echo "deb http://ppa.launchpad.net/ondrej/php/ubuntu hirsute main" > /etc/apt/sources.list.d/ppa_ondrej_php.list \
+    && echo "deb http://ppa.launchpad.net/ondrej/php/ubuntu impish main" > /etc/apt/sources.list.d/ppa_ondrej_php.list \
     && apt-get update \
     && apt-get install -y php7.4-cli php7.4 \
        php7.4-pgsql php7.4-sqlite3 php7.4-gd \
diff --git a/runtimes/8.0/Dockerfile b/runtimes/8.0/Dockerfile
index ed8e6fcf..5f19cb37 100644
--- a/runtimes/8.0/Dockerfile
+++ b/runtimes/8.0/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:21.04
+FROM ubuntu:21.10
 
 LABEL maintainer="Taylor Otwell"
 
@@ -19,7 +19,7 @@ RUN apt-get update \
     && echo "disable-ipv6" >> ~/.gnupg/dirmngr.conf \
     && apt-key adv --homedir ~/.gnupg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys E5267A6C \
     && apt-key adv --homedir ~/.gnupg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C300EE8C \
-    && echo "deb http://ppa.launchpad.net/ondrej/php/ubuntu hirsute main" > /etc/apt/sources.list.d/ppa_ondrej_php.list \
+    && echo "deb http://ppa.launchpad.net/ondrej/php/ubuntu impish main" > /etc/apt/sources.list.d/ppa_ondrej_php.list \
     && apt-get update \
     && apt-get install -y php8.0-cli php8.0 \
        php8.0-pgsql php8.0-sqlite3 php8.0-gd \
diff --git a/runtimes/8.1/Dockerfile b/runtimes/8.1/Dockerfile
index 95e06a61..14b2a78f 100644
--- a/runtimes/8.1/Dockerfile
+++ b/runtimes/8.1/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:21.04
+FROM ubuntu:21.10
 
 LABEL maintainer="Taylor Otwell"
 
@@ -19,7 +19,7 @@ RUN apt-get update \
     && echo "disable-ipv6" >> ~/.gnupg/dirmngr.conf \
     && apt-key adv --homedir ~/.gnupg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys E5267A6C \
     && apt-key adv --homedir ~/.gnupg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C300EE8C \
-    && echo "deb http://ppa.launchpad.net/ondrej/php/ubuntu hirsute main" > /etc/apt/sources.list.d/ppa_ondrej_php.list \
+    && echo "deb http://ppa.launchpad.net/ondrej/php/ubuntu impish main" > /etc/apt/sources.list.d/ppa_ondrej_php.list \
     && apt-get update \
     && apt-get install -y php8.1-cli php8.1 \
        php8.1-pgsql php8.1-sqlite3 php8.1-gd \