diff --git a/collections.yml b/collections.yml
index f65d3a552..ae2996e4a 100644
--- a/collections.yml
+++ b/collections.yml
@@ -7,8 +7,9 @@ collections:
   - name: community.general
   - name: community.mysql
   - name: community.postgresql
-  - name: ansible.posix    # 2020-11-28: For ~3 modules below...
+  - name: ansible.posix    # 2025-02-20: For ~4 modules below...
 
 # selinux WAS in /opt/iiab/iiab/roles/1-prep/tasks/main.yml
 # sysctl      in /opt/iiab/iiab/roles/2-common/tasks/main.yml
+# munin /opt/iiab/iiab/roles/munin/tasks/install.yml
 # synchronize in /opt/iiab/iiab-admin-console/roles/js-menu/tasks/main.yml
diff --git a/roles/2-common/tasks/main.yml b/roles/2-common/tasks/main.yml
index c6fb3f21c..9737fecc4 100644
--- a/roles/2-common/tasks/main.yml
+++ b/roles/2-common/tasks/main.yml
@@ -9,7 +9,7 @@
 - include_tasks: packages.yml
 
 - name: "Use 'sysctl' to set 'kernel.core_uses_pid: 1' in /etc/sysctl.conf"
-  sysctl:    # Places these settings in /etc/sysctl.conf, to survive reboot
+  ansible.posix.sysctl:    # Places these settings in /etc/sysctl.conf, to survive reboot
     name: "{{ item.name }}"
     value: "{{ item.value }}"
   with_items:
diff --git a/roles/munin/tasks/install.yml b/roles/munin/tasks/install.yml
index 24528b438..a46f0d877 100644
--- a/roles/munin/tasks/install.yml
+++ b/roles/munin/tasks/install.yml
@@ -5,7 +5,7 @@
 
 # SEE ALSO roles/network/tasks/install.yml
 - name: "TEMPORARILY REVERT net.ipv6.conf.all.disable_ipv6 to 0 in /etc/sysctl.conf for #3434"
-  sysctl:
+  ansible.posix.sysctl:
     name: net.ipv6.conf.all.disable_ipv6
     value: 0
 
@@ -28,7 +28,7 @@
 
 # SEE ALSO roles/network/tasks/install.yml
 - name: RESTORE net.ipv6.conf.all.disable_ipv6 to 1 in /etc/sysctl.conf for #3434
-  sysctl:
+  ansible.posix.sysctl:
     name: net.ipv6.conf.all.disable_ipv6
     value: 1