diff --git a/changelogs/fragments/598_icmp_block_inversion.yml b/changelogs/fragments/598_icmp_block_inversion.yml
new file mode 100644
index 0000000000..0daaf8f8af
--- /dev/null
+++ b/changelogs/fragments/598_icmp_block_inversion.yml
@@ -0,0 +1,3 @@
+---
+breaking_changes:
+  - firewalld - Changed the type of icmp_block_inversion option from str to bool (https://github.com/ansible-collections/ansible.posix/issues/586).
diff --git a/plugins/modules/firewalld.py b/plugins/modules/firewalld.py
index 4333afda8b..6dd26aa8da 100644
--- a/plugins/modules/firewalld.py
+++ b/plugins/modules/firewalld.py
@@ -74,7 +74,8 @@
   icmp_block_inversion:
     description:
       - Enable/Disable inversion of ICMP blocks for a zone in firewalld.
-    type: str
+      - Note that the option type is changed to bool in ansible.posix version 2.0.0 and later.
+    type: bool
   zone:
     description:
       - The firewalld zone to add/remove to/from.
@@ -152,7 +153,7 @@
 '''
 
 EXAMPLES = r'''
-- name: permanently enable https service, also enable it immediately if possible
+- name: Permanently enable https service, also enable it immediately if possible
   ansible.posix.firewalld:
     service: https
     state: enabled
@@ -160,81 +161,92 @@
     immediate: true
     offline: true
 
-- name: permit traffic in default zone for https service
+- name: Permit traffic in default zone for https service
   ansible.posix.firewalld:
     service: https
     permanent: true
     state: enabled
 
-- name: permit ospf traffic
+- name: Permit ospf traffic
   ansible.posix.firewalld:
     protocol: ospf
     permanent: true
     state: enabled
 
-- name: do not permit traffic in default zone on port 8081/tcp
+- name: Do not permit traffic in default zone on port 8081/tcp
   ansible.posix.firewalld:
     port: 8081/tcp
     permanent: true
     state: disabled
 
-- ansible.posix.firewalld:
+- name: Permit traffic in default zone on port 161-162/ucp
+  ansible.posix.firewalld:
     port: 161-162/udp
     permanent: true
     state: enabled
 
-- ansible.posix.firewalld:
+- name: Permit traffic in dmz zone on http service
+  ansible.posix.firewalld:
     zone: dmz
     service: http
     permanent: true
     state: enabled
 
-- ansible.posix.firewalld:
+- name: Enable FTP service with rate limiting using firewalld rich rule
+  ansible.posix.firewalld:
     rich_rule: rule service name="ftp" audit limit value="1/m" accept
     permanent: true
     state: enabled
 
-- ansible.posix.firewalld:
+- name: Allow traffic from 192.0.2.0/24 in internal zone
+  ansible.posix.firewalld:
     source: 192.0.2.0/24
     zone: internal
     state: enabled
 
-- ansible.posix.firewalld:
+- name: Assign eth2 interface to trusted zone
+  ansible.posix.firewalld:
     zone: trusted
     interface: eth2
     permanent: true
     state: enabled
 
-- ansible.posix.firewalld:
+- name: Enable forwarding in internal zone
+  ansible.posix.firewalld:
     forward: true
     state: enabled
     permanent: true
     zone: internal
 
-- ansible.posix.firewalld:
+- name: Enable masquerade in dmz zone
+  ansible.posix.firewalld:
     masquerade: true
     state: enabled
     permanent: true
     zone: dmz
 
-- ansible.posix.firewalld:
+- name: Create custom zone if not already present
+  ansible.posix.firewalld:
     zone: custom
     state: present
     permanent: true
 
-- ansible.posix.firewalld:
+- name: Enable ICMP block inversion in drop zone
+  ansible.posix.firewalld:
     zone: drop
     state: enabled
     permanent: true
     icmp_block_inversion: true
 
-- ansible.posix.firewalld:
+- name: Block ICMP echo requests in drop zone
+  ansible.posix.firewalld:
     zone: drop
     state: enabled
     permanent: true
     icmp_block: echo-request
 
-- ansible.posix.firewalld:
+- name: Set internal zone target to ACCEPT
+  ansible.posix.firewalld:
     zone: internal
     state: present
     permanent: true
@@ -250,7 +262,6 @@
 '''
 
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.parsing.convert_bool import boolean
 from ansible_collections.ansible.posix.plugins.module_utils.firewalld import FirewallTransaction, fw_offline
 
 try:
@@ -864,7 +875,7 @@ def main():
     module = AnsibleModule(
         argument_spec=dict(
             icmp_block=dict(type='str'),
-            icmp_block_inversion=dict(type='str'),
+            icmp_block_inversion=dict(type='bool'),
             service=dict(type='str'),
             protocol=dict(type='str'),
             port=dict(type='str'),
@@ -987,16 +998,7 @@ def main():
             msgs.append("Changed icmp-block %s to %s" % (icmp_block, desired_state))
 
     if icmp_block_inversion is not None:
-        # Type of icmp_block_inversion will be changed to boolean in a future release.
-        icmp_block_inversion_status = True
-        try:
-            icmp_block_inversion_status = boolean(icmp_block_inversion, True)
-        except TypeError:
-            module.warn('The value of the icmp_block_inversion option is "%s". '
-                        'The type of the option will be changed from string to boolean in a future release. '
-                        'To avoid unexpected behavior, please change the value to boolean.' % icmp_block_inversion)
-        expected_state = 'enabled' if (desired_state == 'enabled') == icmp_block_inversion_status else 'disabled'
-
+        expected_state = 'enabled' if (desired_state == 'enabled') == icmp_block_inversion else 'disabled'
         transaction = IcmpBlockInversionTransaction(
             module,
             action_args=(),