diff --git a/package.json b/package.json
index 88f071e..3a2a6d9 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   },
   "homepage": "https://github.com/dalen/node-puppetdbquery",
   "dependencies": {
-    "ast-types": "^0.8.18",
+    "ast-types": "^0.14.2",
     "commander": "^2.15.1",
     "timespec": "^0.3.0"
   },
diff --git a/yarn.lock b/yarn.lock
index 0884e8a..281ff34 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -187,9 +187,11 @@ assign-symbols@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
 
-ast-types@^0.8.18:
-  version "0.8.18"
-  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.8.18.tgz#c8b98574898e8914e9d8de74b947564a9fe929af"
+ast-types@^0.14.2:
+  version "0.14.2"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.14.2.tgz#600b882df8583e3cd4f2df5fa20fa83759d4bdfd"
+  dependencies:
+    tslib "^2.0.1"
 
 async-each@^1.0.0:
   version "1.0.1"
@@ -3727,6 +3729,10 @@ tsame@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/tsame/-/tsame-1.1.2.tgz#5ce0002acf685942789c63018797a2aa5e6b03c5"
 
+tslib@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.0.1.tgz#410eb0d113e5b6356490eec749603725b021b43e"
+
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"