diff --git a/package-lock.json b/package-lock.json
index 558b6c131..9a4c47c70 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "atom",
-  "version": "1.39.0-dev",
+  "version": "1.40.0-dev",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1358,8 +1358,8 @@
       "integrity": "sha512-AHEZOz7RcIdPWlGQByHGUE9yVhn1O9qJQRHehvkN8riiUyJpNpaImk7dloH8Nw/JX14tKJhjT+EadY2u/+j7IQ=="
     },
     "autocomplete-plus": {
-      "version": "https://www.atom.io/api/packages/autocomplete-plus/versions/2.42.0/tarball",
-      "integrity": "sha512-6DvqS4z8JR8kLLPKImGX5pZlc67SWr6JUpIJAH++gYmWZDu5kshqvsDnnuWjRtA1tCZpNW4e/mN/hQcHyuuOVA==",
+      "version": "https://www.atom.io/api/packages/autocomplete-plus/versions/2.42.1/tarball",
+      "integrity": "sha512-ac1BOdUPPJ9di5wTMrCZupv2TRhhhaeO7dPyJdU3v8jIWGGf/R/ros0o5pje/gyNuZ7sEVGWiWSMNiQc3kuXWA==",
       "requires": {
         "atom-slick": "^2.0.0",
         "dompurify": "^1.0.8",
@@ -1374,9 +1374,9 @@
       },
       "dependencies": {
         "dompurify": {
-          "version": "1.0.8",
-          "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-1.0.8.tgz",
-          "integrity": "sha512-vetRFbN1SXSPfP3ClIiYnxTrXquSqakBEOoB5JESn0SVcSYzpu6ougjakpKnskGctYdlNpwf+riUHSkG7d4XUw=="
+          "version": "1.0.10",
+          "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-1.0.10.tgz",
+          "integrity": "sha512-huhl3DSWX5LaA7jDtnj3XQdJgWW1wYouNW7N0drGzQa4vEUSVWyeFN+Atx6HP4r5cang6oQytMom6I4yhGJj5g=="
         },
         "grim": {
           "version": "2.0.2",
@@ -1387,9 +1387,9 @@
           }
         },
         "marked": {
-          "version": "0.5.1",
-          "resolved": "https://registry.npmjs.org/marked/-/marked-0.5.1.tgz",
-          "integrity": "sha512-iUkBZegCZou4AdwbKTwSW/lNDcz5OuRSl3qdcl31Ia0B2QPG0Jn+tKblh/9/eP9/6+4h27vpoh8wel/vQOV0vw=="
+          "version": "0.5.2",
+          "resolved": "https://registry.npmjs.org/marked/-/marked-0.5.2.tgz",
+          "integrity": "sha512-fdZvBa7/vSQIZCi4uuwo2N3q+7jJURpMVCcbaX0S1Mg65WZ5ilXvC67MviJAsdjqqgD+CEq4RKo5AYGgINkVAA=="
         }
       }
     },
diff --git a/package.json b/package.json
index 492832192..8cb5ff0ca 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "autocomplete-atom-api": "https://www.atom.io/api/packages/autocomplete-atom-api/versions/0.10.7/tarball",
     "autocomplete-css": "https://www.atom.io/api/packages/autocomplete-css/versions/0.17.5/tarball",
     "autocomplete-html": "https://www.atom.io/api/packages/autocomplete-html/versions/0.8.8/tarball",
-    "autocomplete-plus": "https://www.atom.io/api/packages/autocomplete-plus/versions/2.42.0/tarball",
+    "autocomplete-plus": "https://www.atom.io/api/packages/autocomplete-plus/versions/2.42.1/tarball",
     "autocomplete-snippets": "https://www.atom.io/api/packages/autocomplete-snippets/versions/1.12.1/tarball",
     "autoflow": "file:packages/autoflow",
     "autosave": "https://www.atom.io/api/packages/autosave/versions/0.24.6/tarball",
@@ -187,7 +187,7 @@
     "autocomplete-atom-api": "0.10.7",
     "autocomplete-css": "0.17.5",
     "autocomplete-html": "0.8.8",
-    "autocomplete-plus": "2.42.0",
+    "autocomplete-plus": "2.42.1",
     "autocomplete-snippets": "1.12.1",
     "autoflow": "file:./packages/autoflow",
     "autosave": "0.24.6",