diff --git a/MANIFEST.json b/MANIFEST.json
index cd995d3..b1d6ed1 100644
--- a/MANIFEST.json
+++ b/MANIFEST.json
@@ -1,5 +1,10 @@
 {
   "taxonomies": [
+    {
+      "version": 1,
+      "name": "accessnow",
+      "description": "Access Now"
+    },
     {
       "version": 1,
       "name": "admiralty-scale",
@@ -10,6 +15,16 @@
       "name": "adversary",
       "description": "An overview and description of the adversary infrastructure."
     },
+    {
+      "version": 1,
+      "name": "analyst-assessment",
+      "description": ""
+    },
+    {
+      "version": 1,
+      "name": "binary-class",
+      "description": ""
+    },
     {
       "version": 1,
       "name": "circl",
@@ -20,6 +35,11 @@
       "name": "csirt_case_classification",
       "description": "FIRST CSIRT Case Classification."
     },
+    {
+      "version": 1,
+      "name": "cssa",
+      "description": ""
+    },
     {
       "version": 1,
       "name": "de-vs",
diff --git a/validate_all.sh b/validate_all.sh
index e765da8..d15d106 100755
--- a/validate_all.sh
+++ b/validate_all.sh
@@ -12,6 +12,14 @@ if ! [ $diffs -eq 0 ]; then
 	exit 1
 fi
 
+directories=`ls -d */ | wc -w`
+manifest_entries=`cat MANIFEST.json | jq '.taxonomies | length'`
+
+if ! [ $directories -eq $manifest_entries ]; then
+    echo "MANIFEST isn't up-to-date."
+    exit 1
+fi
+
 for dir in */machinetag.json
 do
   echo -n "${dir}: "