diff --git a/package-lock.json b/package-lock.json
index 1552adb..7e83584 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,9 +18,9 @@
       }
     },
     "ansi_up": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/ansi_up/-/ansi_up-3.0.0.tgz",
-      "integrity": "sha1-J/Rdj0V9nO/1nk6gPI5vE8GjA+g="
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/ansi_up/-/ansi_up-5.0.0.tgz",
+      "integrity": "sha512-RHw/w3Kb2U3k4XKfl8FXZW9ldxtTBbLNdKO0RboYeU4ReVwRP77M7b/OxiavMGZsBWcDxn/T0QiR+VtLf7mPYw=="
     },
     "balanced-match": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
index e4dbb9c..0e5f498 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "atom": ">=1.39.0 <2.0.0"
   },
   "dependencies": {
-    "ansi_up": "^3.0.0",
+    "ansi_up": "^5.0.0",
     "chroma-js": "^1.3.7",
     "element-resize-detector": "^1.1.13",
     "etch": "^0.14",