diff --git a/packages/xarc-app-dev/lib/dev-admin/cdn-mock.js b/packages/xarc-app-dev/lib/dev-admin/cdn-mock.js
index d58687efe..ec36fefd5 100644
--- a/packages/xarc-app-dev/lib/dev-admin/cdn-mock.js
+++ b/packages/xarc-app-dev/lib/dev-admin/cdn-mock.js
@@ -57,7 +57,7 @@ const cdnMock = {
         asset = LOADED_ASSETS[filePath] = Fs.readFileSync(fp);
       }
       const ext = Path.extname(filePath);
-      const mimeType = mime.lookup(ext);
+      const mimeType = mime.getType(ext);
       res.writeHead(200, {
         "Content-Type": mimeType,
         "Content-Length": Buffer.byteLength(asset)
diff --git a/packages/xarc-app-dev/lib/dev-admin/dev-express.js b/packages/xarc-app-dev/lib/dev-admin/dev-express.js
index af216f550..4fabc8d47 100644
--- a/packages/xarc-app-dev/lib/dev-admin/dev-express.js
+++ b/packages/xarc-app-dev/lib/dev-admin/dev-express.js
@@ -37,10 +37,9 @@ function setup(app, protocol, port) {
         replyNotFound: () => res.status(404).send("Not Found"),
         replyError: err => res.status(500).send(err),
         replyStaticData: data => {
-          const type = mime.lookup(req.url);
+          const type = mime.getType(req.url);
           if (type) {
-            const charset = mime.charsets.lookup(type);
-            res.set("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+            res.set("Content-Type", type);
           }
           res.status(200).send(data);
         },
diff --git a/packages/xarc-app-dev/lib/dev-admin/dev-fastify.js b/packages/xarc-app-dev/lib/dev-admin/dev-fastify.js
index da150c933..89d2ae823 100644
--- a/packages/xarc-app-dev/lib/dev-admin/dev-fastify.js
+++ b/packages/xarc-app-dev/lib/dev-admin/dev-fastify.js
@@ -44,10 +44,9 @@ async function register(fastify) {
         reply.send(err);
       },
       replyStaticData: data => {
-        const type = mime.lookup(request.url);
+        const type = mime.getType(request.url);
         if (type) {
-          const charset = mime.charsets.lookup(type);
-          reply.header("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+          reply.header("Content-Type", type);
         }
         reply.code(200).send(data);
       },
@@ -59,10 +58,9 @@ async function register(fastify) {
           reply.code(404);
           return;
         }
-        const type = mime.lookup(name);
+        const type = mime.getType(name);
         if (type) {
-          const charset = mime.charsets.lookup(type);
-          reply.header("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+          reply.header("Content-Type", type);
         }
         reply.code(200).send(data);
       }
diff --git a/packages/xarc-app-dev/lib/dev-admin/dev-hapi.js b/packages/xarc-app-dev/lib/dev-admin/dev-hapi.js
index dd9562a87..2177dce41 100644
--- a/packages/xarc-app-dev/lib/dev-admin/dev-hapi.js
+++ b/packages/xarc-app-dev/lib/dev-admin/dev-hapi.js
@@ -45,11 +45,10 @@ function register(server, options, next) {
           },
           replyError: err => reply(err),
           replyStaticData: data => {
-            const type = mime.lookup(req.url);
+            const type = mime.getType(req.url);
             const resp = reply.response(data).code(200);
             if (type) {
-              const charset = mime.charsets.lookup(type);
-              return resp.header("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+              return resp.header("Content-Type", type);
             }
             return resp;
           },
@@ -60,11 +59,10 @@ function register(server, options, next) {
             } catch (e) {
               return reply.code(404);
             }
-            const type = mime.lookup(name);
+            const type = mime.getType(name);
             const resp = reply.response(data).code(200);
             if (type) {
-              const charset = mime.charsets.lookup(type);
-              resp.header("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+              resp.header("Content-Type", type);
             }
             return resp;
           }
diff --git a/packages/xarc-app-dev/lib/dev-admin/dev-hapi17.js b/packages/xarc-app-dev/lib/dev-admin/dev-hapi17.js
index 3c29ef19a..063fb4c9c 100644
--- a/packages/xarc-app-dev/lib/dev-admin/dev-hapi17.js
+++ b/packages/xarc-app-dev/lib/dev-admin/dev-hapi17.js
@@ -47,11 +47,10 @@ function register(server) {
             return h.response(err);
           },
           replyStaticData: data => {
-            const type = mime.lookup(req.url);
+            const type = mime.getType(req.url);
             const resp = h.response(data).code(200);
             if (type) {
-              const charset = mime.charsets.lookup(type);
-              resp.header("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+              resp.header("Content-Type", type);
             }
             return resp.takeover();
           },
@@ -62,11 +61,10 @@ function register(server) {
             } catch (e) {
               return h.code(404);
             }
-            const type = mime.lookup(name);
+            const type = mime.getType(name);
             const resp = h.response(data).code(200);
             if (type) {
-              const charset = mime.charsets.lookup(type);
-              resp.header("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+              resp.header("Content-Type", type);
             }
             return resp.takeover();
           }
diff --git a/packages/xarc-app-dev/lib/dev-admin/dev-koa.js b/packages/xarc-app-dev/lib/dev-admin/dev-koa.js
index 291ffbde1..3d4140c19 100644
--- a/packages/xarc-app-dev/lib/dev-admin/dev-koa.js
+++ b/packages/xarc-app-dev/lib/dev-admin/dev-koa.js
@@ -48,10 +48,9 @@ function setup(app, protocol, port) {
           return res;
         },
         replyStaticData: data => {
-          const type = mime.lookup(req.url);
+          const type = mime.getType(req.url);
           if (type) {
-            const charset = mime.charsets.lookup(type);
-            res.append("Content-Type", type + (charset ? `; charset=${charset}` : ""));
+            res.append("Content-Type", type);
           }
           res.status = 200;
           res.body = data;
diff --git a/packages/xarc-app-dev/package.json b/packages/xarc-app-dev/package.json
index efac07a9c..c0291a06e 100644
--- a/packages/xarc-app-dev/package.json
+++ b/packages/xarc-app-dev/package.json
@@ -66,7 +66,7 @@
     "isomorphic-loader": "^3.1.0",
     "lodash": "^4.13.1",
     "log-update": "^4.0.0",
-    "mime": "^1.6.0",
+    "mime": "^2.4.5",
     "mkdirp": "^0.5.1",
     "nix-clap": "^1.3.7",
     "nyc": "^14.1.1",
@@ -120,7 +120,6 @@
   },
   "fyn": {
     "dependencies": {
-      "@jchip/redbird": "../../../redbird",
       "@xarc/webpack": "../xarc-webpack",
       "electrode-node-resolver": "../electrode-node-resolver",
       "subapp-util": "../subapp-util"
diff --git a/packages/xarc-app-dev/test/spec/dev-admin/dev-fastify.spec.js b/packages/xarc-app-dev/test/spec/dev-admin/dev-fastify.spec.js
index d06b8f0bd..874dc2d16 100644
--- a/packages/xarc-app-dev/test/spec/dev-admin/dev-fastify.spec.js
+++ b/packages/xarc-app-dev/test/spec/dev-admin/dev-fastify.spec.js
@@ -186,7 +186,7 @@ describe("dev-admin-fastify", function() {
     expect(reply.statusCode).eq(200);
     expect(reply.savedHeaders[0]).deep.eq({
       name: "Content-Type",
-      value: "text/plain; charset=UTF-8"
+      value: "text/plain"
     });
     expect(reply.savedPayloads.length).eq(1);
     expect(reply.savedPayloads[0].toString()).eq("blah");
diff --git a/packages/xarc-app-dev/test/spec/dev-hapi.spec.js b/packages/xarc-app-dev/test/spec/dev-hapi.spec.js
index 1c6ec4a31..13013d2bf 100644
--- a/packages/xarc-app-dev/test/spec/dev-hapi.spec.js
+++ b/packages/xarc-app-dev/test/spec/dev-hapi.spec.js
@@ -77,7 +77,7 @@ describe("dev-hapi", function() {
         const { result } = cycle.replyFile("./xclap.js");
         expect(result.code).to.equal(200);
         expect(result).to.have.any.keys("response");
-        expect(result.headers["Content-Type"]).to.equal("application/javascript; charset=UTF-8");
+        expect(result.headers["Content-Type"]).to.equal("application/javascript");
       });
     });
 
@@ -96,7 +96,7 @@ describe("dev-hapi", function() {
         expect(result.code).to.equal(200);
         expect(result.takeover).to.equal(true);
         expect(result).to.have.any.keys("response");
-        expect(result.headers["Content-Type"]).to.equal("application/javascript; charset=UTF-8");
+        expect(result.headers["Content-Type"]).to.equal("application/javascript");
       });
     });
 
@@ -115,7 +115,7 @@ describe("dev-hapi", function() {
         expect(result.code).to.equal(200);
         expect(result.takeover).to.equal(true);
         expect(result).to.have.any.keys("response");
-        expect(result.headers["Content-Type"]).to.equal("application/javascript; charset=UTF-8");
+        expect(result.headers["Content-Type"]).to.equal("application/javascript");
       });
     });