diff --git a/README.md b/README.md
index 514114c..3aaf9dc 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,8 @@ trust store.
 
 ## Requirements
 
-The role relies on the modules of the collection `community.crypto`.
+The role relies on the modules of the collection `community.crypto`. On Archlinux the collection `community.general`
+is additionally required, because it provides the `pacman` module.
 
 ```bash
 ansible-galaxy collection install -r requirements.yaml
diff --git a/molecule/default/collections.yml b/molecule/default/collections.yml
index a868d81..7943412 100644
--- a/molecule/default/collections.yml
+++ b/molecule/default/collections.yml
@@ -3,3 +3,4 @@
 collections:
 - name: community.crypto
 - name: community.docker
+- name: community.general
diff --git a/requirements.yaml b/requirements.yaml
index a868d81..7943412 100644
--- a/requirements.yaml
+++ b/requirements.yaml
@@ -3,3 +3,4 @@
 collections:
 - name: community.crypto
 - name: community.docker
+- name: community.general