diff --git a/MANIFEST.json b/MANIFEST.json
index 939086a..66441ff 100644
--- a/MANIFEST.json
+++ b/MANIFEST.json
@@ -76,7 +76,7 @@
     {
       "description": "CIRCL Taxonomy - Schemes of Classification in Incident Response and Detection",
       "name": "circl",
-      "version": 3
+      "version": 4
     },
     {
       "description": "Course of action taken within organization to discover, detect, deny, disrupt, degrade, deceive and/or destroy an attack.",
@@ -565,5 +565,5 @@
     }
   ],
   "url": "https://raw.githubusercontent.com/MISP/misp-taxonomies/master/",
-  "version": "20200308"
+  "version": "20200323"
 }
diff --git a/circl/machinetag.json b/circl/machinetag.json
index caeb3ef..9865e5b 100644
--- a/circl/machinetag.json
+++ b/circl/machinetag.json
@@ -1,7 +1,7 @@
 {
   "namespace": "circl",
   "description": "CIRCL Taxonomy - Schemes of Classification in Incident Response and Detection",
-  "version": 3,
+  "version": 4,
   "predicates": [
     {
       "value": "incident-classification",
@@ -87,6 +87,10 @@
         {
           "value": "sextortion",
           "expanded": "sextortion"
+        },
+        {
+          "value": "covid-19",
+          "expanded": "covid-19"
         }
       ]
     },