diff --git a/contrib/k8s/helm/prowler-app/templates/api/configmap.yaml b/contrib/k8s/helm/prowler-app/templates/api/configmap.yaml
index 8e219a9271..a76982d403 100644
--- a/contrib/k8s/helm/prowler-app/templates/api/configmap.yaml
+++ b/contrib/k8s/helm/prowler-app/templates/api/configmap.yaml
@@ -7,4 +7,4 @@ metadata:
 data:
   {{- range $key, $value := .Values.api.djangoConfig }}
   {{ $key }}: {{ $value | quote }}
-  {{- end }}
\ No newline at end of file
+  {{- end }}
diff --git a/contrib/k8s/helm/prowler-app/templates/api/role.yaml b/contrib/k8s/helm/prowler-app/templates/api/role.yaml
index 172b035076..f55d3c7dc9 100644
--- a/contrib/k8s/helm/prowler-app/templates/api/role.yaml
+++ b/contrib/k8s/helm/prowler-app/templates/api/role.yaml
@@ -26,4 +26,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: {{ include "prowler.api.serviceAccountName" . }}
-  namespace: {{ .Release.Namespace }}
\ No newline at end of file
+  namespace: {{ .Release.Namespace }}
diff --git a/prowler/changelog.d/trailing-newlines.changed.md b/prowler/changelog.d/trailing-newlines.changed.md
new file mode 100644
index 0000000000..4236f816b1
--- /dev/null
+++ b/prowler/changelog.d/trailing-newlines.changed.md
@@ -0,0 +1 @@
+Add missing trailing newlines to compliance, region, and fixture data files for POSIX compliance
diff --git a/prowler/compliance/aws/cis_7.0_aws.json b/prowler/compliance/aws/cis_7.0_aws.json
index f4f7fedff8..a927c375bb 100644
--- a/prowler/compliance/aws/cis_7.0_aws.json
+++ b/prowler/compliance/aws/cis_7.0_aws.json
@@ -1607,4 +1607,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/prowler/compliance/m365/cis_7.0_m365.json b/prowler/compliance/m365/cis_7.0_m365.json
index a913f339be..941a33b187 100644
--- a/prowler/compliance/m365/cis_7.0_m365.json
+++ b/prowler/compliance/m365/cis_7.0_m365.json
@@ -3611,4 +3611,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/prowler/providers/aws/aws_regions_by_service.json b/prowler/providers/aws/aws_regions_by_service.json
index 68e164b13e..1fa83ab593 100644
--- a/prowler/providers/aws/aws_regions_by_service.json
+++ b/prowler/providers/aws/aws_regions_by_service.json
@@ -13607,4 +13607,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/tests/providers/aws/aws_regions_by_service.json b/tests/providers/aws/aws_regions_by_service.json
index e7eb2e28f6..6d53a88d8c 100644
--- a/tests/providers/aws/aws_regions_by_service.json
+++ b/tests/providers/aws/aws_regions_by_service.json
@@ -5916,4 +5916,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/tests/providers/nhn/lib/mutelist/fixtures/nhn_mutelist.yaml b/tests/providers/nhn/lib/mutelist/fixtures/nhn_mutelist.yaml
index 6a4be42b4b..7fc22acedb 100644
--- a/tests/providers/nhn/lib/mutelist/fixtures/nhn_mutelist.yaml
+++ b/tests/providers/nhn/lib/mutelist/fixtures/nhn_mutelist.yaml
@@ -13,4 +13,4 @@ Mutelist:
             - "*"
           Resources:
             - "resource_1"
-            - "resource_2"
\ No newline at end of file
+            - "resource_2"