diff --git a/packages/common/.flowconfig b/packages/common/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/common/.flowconfig
+++ b/packages/common/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/currencies/.flowconfig b/packages/currencies/.flowconfig
index 1416ee224..03f1106ae 100644
--- a/packages/currencies/.flowconfig
+++ b/packages/currencies/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/example-node/.flowconfig b/packages/example-node/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/example-node/.flowconfig
+++ b/packages/example-node/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-app-ada/.flowconfig b/packages/hw-app-ada/.flowconfig
index eff9528a9..9504167fb 100644
--- a/packages/hw-app-ada/.flowconfig
+++ b/packages/hw-app-ada/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-app-btc/.flowconfig b/packages/hw-app-btc/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-app-btc/.flowconfig
+++ b/packages/hw-app-btc/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-app-btc/src/Btc.js b/packages/hw-app-btc/src/Btc.js
index ff9bac4a7..d8ca3620d 100644
--- a/packages/hw-app-btc/src/Btc.js
+++ b/packages/hw-app-btc/src/Btc.js
@@ -599,6 +599,7 @@ btc.createPaymentTransactionNew(
             segwit
           ).then(() =>
             doIf(!resuming && typeof changePath != "undefined", () => {
+              // $FlowFixMe
               return this.provideOutputFullChangePath(changePath);
             }).then(() => this.hashOutputFull(outputScript))
           )
@@ -633,6 +634,7 @@ btc.createPaymentTransactionNew(
             .then(() =>
               doIf(!segwit, () =>
                 doIf(!resuming && typeof changePath != "undefined", () => {
+                  // $FlowFixMe
                   return this.provideOutputFullChangePath(changePath);
                 }).then(() => this.hashOutputFull(outputScript))
               )
diff --git a/packages/hw-app-eth/.flowconfig b/packages/hw-app-eth/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-app-eth/.flowconfig
+++ b/packages/hw-app-eth/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-app-str/.flowconfig b/packages/hw-app-str/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-app-str/.flowconfig
+++ b/packages/hw-app-str/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-app-xrp/.flowconfig b/packages/hw-app-xrp/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-app-xrp/.flowconfig
+++ b/packages/hw-app-xrp/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-hid-cli/.flowconfig b/packages/hw-hid-cli/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-hid-cli/.flowconfig
+++ b/packages/hw-hid-cli/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-http-proxy-devserver/.flowconfig b/packages/hw-http-proxy-devserver/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-http-proxy-devserver/.flowconfig
+++ b/packages/hw-http-proxy-devserver/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-transport-http/.flowconfig b/packages/hw-transport-http/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-transport-http/.flowconfig
+++ b/packages/hw-transport-http/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-transport-mocker/.flowconfig b/packages/hw-transport-mocker/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-transport-mocker/.flowconfig
+++ b/packages/hw-transport-mocker/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-transport-node-hid/.flowconfig b/packages/hw-transport-node-hid/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-transport-node-hid/.flowconfig
+++ b/packages/hw-transport-node-hid/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-transport-u2f/.flowconfig b/packages/hw-transport-u2f/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-transport-u2f/.flowconfig
+++ b/packages/hw-transport-u2f/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/hw-transport/.flowconfig b/packages/hw-transport/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/hw-transport/.flowconfig
+++ b/packages/hw-transport/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/react-native-hid/.flowconfig b/packages/react-native-hid/.flowconfig
index 1416ee224..03f1106ae 100644
--- a/packages/react-native-hid/.flowconfig
+++ b/packages/react-native-hid/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/react-native-hw-transport-ble/.flowconfig b/packages/react-native-hw-transport-ble/.flowconfig
index 1416ee224..03f1106ae 100644
--- a/packages/react-native-hw-transport-ble/.flowconfig
+++ b/packages/react-native-hw-transport-ble/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/test/.flowconfig b/packages/test/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/test/.flowconfig
+++ b/packages/test/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]
 
diff --git a/packages/web3-subprovider/.flowconfig b/packages/web3-subprovider/.flowconfig
index 0d2614028..43c5d124f 100644
--- a/packages/web3-subprovider/.flowconfig
+++ b/packages/web3-subprovider/.flowconfig
@@ -1,4 +1,5 @@
 [ignore]
+<PROJECT_ROOT>/lib
 
 [include]