diff --git a/src/content/docs/apm/agents/php-agent/advanced-installation/install-new-relic-php-agent-gae-flexible-environment.mdx b/src/content/docs/apm/agents/php-agent/advanced-installation/install-new-relic-php-agent-gae-flexible-environment.mdx
index e8e3242c051..ab331524c4f 100644
--- a/src/content/docs/apm/agents/php-agent/advanced-installation/install-new-relic-php-agent-gae-flexible-environment.mdx
+++ b/src/content/docs/apm/agents/php-agent/advanced-installation/install-new-relic-php-agent-gae-flexible-environment.mdx
@@ -50,6 +50,12 @@ For more information about deploying and configuring your PHP app in the GAE fle
     RUN DEBIAN_FRONTEND=noninteractive apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -y install newrelic-php5
     RUN NR_INSTALL_KEY="new-relic-license-key" NR_INSTALL_SILENT=true newrelic-install install
     ```
+
+    NOTE: For Debian Trixie and later use the following `wget` command instead:
+
+    ```dockerfile
+    wget -O- https://download.newrelic.com/NEWRELIC_APT_2DAD550E.public | sudo gpg --dearmor -o /usr/share/keyrings/download.newrelic.com-newrelic.gpg
+    ```
   </Collapser>
 
   <Collapser
diff --git a/src/content/docs/apm/agents/php-agent/installation/php-agent-installation-ubuntu-debian.mdx b/src/content/docs/apm/agents/php-agent/installation/php-agent-installation-ubuntu-debian.mdx
index aad384cc527..0be702230b0 100644
--- a/src/content/docs/apm/agents/php-agent/installation/php-agent-installation-ubuntu-debian.mdx
+++ b/src/content/docs/apm/agents/php-agent/installation/php-agent-installation-ubuntu-debian.mdx
@@ -34,10 +34,18 @@ This is the recommended method for New Relic installation and maintenance.
 
     #### 1. Trust the New Relic GPG key
 
+       For all Ubuntu releases and Debian releases _before_ Debian Trixie use:
+
        ```bash
        wget -O- https://download.newrelic.com/NEWRELIC_APT_2DAD550E.public | sudo gpg --import --batch --no-default-keyring --keyring /usr/share/keyrings/download.newrelic.com-newrelic.gpg
        ```
 
+       For Debian Trixie and later use:
+
+       ```bash
+       wget -O- https://download.newrelic.com/NEWRELIC_APT_2DAD550E.public | sudo gpg --dearmor -o /usr/share/keyrings/download.newrelic.com-newrelic.gpg
+       ```
+
        This command installs New Relic's GPG key used by `apt` to verify signatures of packages in `http://apt.newrelic.com/debian/` apt repository added in next step.
 
     #### 2. Add `http://apt.newrelic.com/debian/` apt repository to `sources.list`