diff --git a/package.json b/package.json
index ce6c8b5b3..b9c7d21cb 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
         "eslint-plugin-promise": "4.2.1",
         "eslint-plugin-standard": "4.0.1",
         "fast-deep-equal": "3.1.3",
-        "flowchart.js": "1.14.1",
+        "flowchart.js": "1.14.2",
         "fork-awesome": "1.1.7",
         "highlight.js": "10.2.1",
         "i18next": "19.8.2",
diff --git a/src/external-types/flowchart.js/index.d.ts b/src/external-types/flowchart.js/index.d.ts
deleted file mode 100644
index b6891a7a1..000000000
--- a/src/external-types/flowchart.js/index.d.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-declare module 'flowchart.js' {
-  type Options = {
-    'line-width': number,
-    'fill': string,
-    'font-size': string,
-    'font-family': string
-  }
-  type ParseOutput = {
-    clean: () => void,
-    drawSVG: (container: HTMLElement, options: Options) => void,
-  }
-  export const parse: (code: string) => ParseOutput
-}
diff --git a/yarn.lock b/yarn.lock
index af2352310..084b3405d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6739,10 +6739,10 @@ flatten@^1.0.2:
   resolved "https://registry.yarnpkg.com/flatten/-/flatten-1.0.3.tgz#c1283ac9f27b368abc1e36d1ff7b04501a30356b"
   integrity sha512-dVsPA/UwQ8+2uoFe5GHtiBMu48dWLTdsuEd7CKGlZlD78r1TTWBvDuFaFGKCo/ZfEr95Uk56vZoX86OsHkUeIg==
 
-flowchart.js@1.14.1:
-  version "1.14.1"
-  resolved "https://registry.yarnpkg.com/flowchart.js/-/flowchart.js-1.14.1.tgz#aec39bf1f8b7f2f181c2872d9f190b5239ffa3b5"
-  integrity sha512-WbjQNVlHwklGHCpkOc/J7L5YaPixiguo6pghUgF/ddrEaufHGwzTO0FWTPbPNb8VNZlggVsKCITKO9Xm8xD/RQ==
+flowchart.js@1.14.2:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/flowchart.js/-/flowchart.js-1.14.2.tgz#d9d25cd0c1acf393897e4a8ca36262368fc4d479"
+  integrity sha512-kKQjuXjfAOdK0IGq1Q8czgQlQtEHaafSdP3gNMRRbvm9ziiC/KCLnt61HoT2e73rqPRVhfFRzB/8CR6UNM1bZw==
   dependencies:
     raphael "2.3.0"