diff --git a/src/job-executor.js b/src/job-executor.js
index 35b334ca8..a699d991d 100644
--- a/src/job-executor.js
+++ b/src/job-executor.js
@@ -32,8 +32,13 @@ export class UnsupportedVectorType extends JobExecutorError {
 
 const match = (pattern, value) => {
   if (isPlainObject(pattern)) {
-    if (pattern.__or && size(pattern) === 1) {
-      return some(pattern.__or, subpattern => match(subpattern, value))
+    if (size(pattern) === 1) {
+      if (pattern.__or) {
+        return some(pattern.__or, subpattern => match(subpattern, value))
+      }
+      if (pattern.__not) {
+        return !match(pattern.__not, value)
+      }
     }
 
     return isPlainObject(value) && every(pattern, (subpattern, key) => (