diff --git a/devtools/client/debugger/babel.config.js b/devtools/client/debugger/babel.config.js
index 0f42a288a972..8341a4194890 100644
--- a/devtools/client/debugger/babel.config.js
+++ b/devtools/client/debugger/babel.config.js
@@ -31,7 +31,6 @@ module.exports = {
         ],
       ],
       plugins: [
-        "@babel/plugin-transform-flow-strip-types",
         "@babel/plugin-proposal-class-properties",
         "@babel/plugin-proposal-optional-chaining",
         "@babel/plugin-proposal-nullish-coalescing-operator",
diff --git a/devtools/client/debugger/bin/try-runner.js b/devtools/client/debugger/bin/try-runner.js
index 428340a56f6d..1bab722ad1e0 100644
--- a/devtools/client/debugger/bin/try-runner.js
+++ b/devtools/client/debugger/bin/try-runner.js
@@ -10,7 +10,6 @@
 const { execFileSync } = require("child_process");
 const { chdir } = require("process");
 const path = require("path");
-const flow = require("flow-bin");
 
 const dbgPath = path.join(__dirname, "..");
 
@@ -37,28 +36,6 @@ function logStart(name) {
   console.log(`TEST START | ${name}`);
 }
 
-function runFlowJson() {
-  const { out } = execOut(flow, ["check", "--json"]);
-  const results = JSON.parse(out);
-
-  if (!results.passed) {
-    for (const error of results.errors) {
-      for (const message of error.message) {
-        console.log(`TEST-UNEXPECTED-FAIL flow | ${message.descr}`);
-      }
-    }
-  }
-
-  return results.passed;
-}
-
-function runFlow() {
-  logStart("Flow");
-  const { out } = execOut(flow, ["check"]);
-  console.log(out);
-  return runFlowJson();
-}
-
 function jest() {
   logStart("Jest");
   const { out } = execOut("yarn", ["test-ci"]);
@@ -95,19 +72,16 @@ function lintMd() {
 }
 
 chdir(dbgPath);
-const flowPassed = runFlow();
 const jestPassed = jest();
 const styleLintPassed = stylelint();
 const remarkPassed = lintMd();
 
 const success =
-  flowPassed &&
   jestPassed &&
   styleLintPassed &&
   remarkPassed;
 
 console.log({
-  flowPassed,
   jestPassed,
   styleLintPassed,
   remarkPassed,
diff --git a/devtools/client/debugger/package.json b/devtools/client/debugger/package.json
index 81ac145307af..e1e7fc3487d2 100644
--- a/devtools/client/debugger/package.json
+++ b/devtools/client/debugger/package.json
@@ -12,19 +12,14 @@
   "homepage": "https://github.com/firefox-devtools/debugger#readme",
   "engineStrict": true,
   "scripts": {
-    "flow": "flow",
     "license-check": "devtools-license-check",
     "links": "ls -l node_modules/ | grep ^l || echo 'no linked packages'",
     "test": "TZ=Africa/Nairobi jest",
     "test-ci": "TZ=Africa/Nairobi jest --json",
     "test:watch": "jest --watch",
     "test:coverage": "yarn test --coverage",
-    "test:all": "yarn test; yarn flow",
-    "watch": "node bin/watch",
-    "flow-coverage": "flow-coverage-report --threshold 50 -i 'src/actions/*.js' -i 'src/reducers/*.js' -i 'src/utils/*.js' -i 'src/components/*.js' -i 'src/components/**/*.js' -t html -t text",
-    "flow-utils": "flow-coverage-report -i 'src/utils/*.js' -i 'src/utils/**/*.js' -t text",
-    "flow-redux": "flow-coverage-report  -i 'src/reducers/*.js' -i 'src/actions/*.js'  -t text",
-    "flow-react": "flow-coverage-report -i 'src/components/**/*.js' -t text"
+    "test:all": "yarn test",
+    "watch": "node bin/watch"
   },
   "dependencies": {
     "codemirror": "^5.28.0",
@@ -64,7 +59,6 @@
     "@babel/plugin-proposal-class-properties": "^7.5.5",
     "@babel/plugin-proposal-nullish-coalescing-operator": "^7.8.3",
     "@babel/plugin-proposal-optional-chaining": "^7.8.3",
-    "@babel/plugin-transform-flow-strip-types": "^7.4.4",
     "@babel/plugin-transform-modules-commonjs": "^7.5.0",
     "@babel/preset-env": "^7.5.5",
     "@babel/preset-react": "^7.0.0",
@@ -82,7 +76,6 @@
     "enzyme-adapter-react-16": "^1.14.0",
     "enzyme-to-json": "3.3.5",
     "extract-text-webpack-plugin": "^3.0.2",
-    "flow-bin": "0.97.0",
     "immutable": "^3.8.2",
     "jest": "^23.0.0",
     "jest-environment-jsdom": "^23.0.0",
@@ -94,4 +87,4 @@
     "webpack": "^3.5.5",
     "workerjs": "github:jasonLaster/workerjs#1944c8b753cc9e84b6ed0cb2fbcaa25600706446"
   }
-}
\ No newline at end of file
+}
diff --git a/devtools/client/shared/build/build-debugger.js b/devtools/client/shared/build/build-debugger.js
index 1866074e720f..3b5a557779b0 100644
--- a/devtools/client/shared/build/build-debugger.js
+++ b/devtools/client/shared/build/build-debugger.js
@@ -208,7 +208,6 @@ Babel.registerPlugin("transform-mc", transformMC);
 
 module.exports = function(filePath) {
   return [
-    "transform-flow-strip-types",
     "proposal-optional-chaining",
     "proposal-class-properties",
     "transform-modules-commonjs",
diff --git a/devtools/client/shared/build/build.js b/devtools/client/shared/build/build.js
index 210c28c62586..c64c85481137 100644
--- a/devtools/client/shared/build/build.js
+++ b/devtools/client/shared/build/build.js
@@ -14,11 +14,7 @@ const Babel = require("./babel");
 const fs = require("fs");
 const _path = require("path");
 
-const defaultPlugins = [
-  "transform-flow-strip-types",
-  "proposal-class-properties",
-  "transform-react-jsx",
-];
+const defaultPlugins = ["proposal-class-properties", "transform-react-jsx"];
 
 function transform(filePath) {
   // Use the extra plugins only for the debugger