diff --git a/crypto_plugins/flutter_libepiccash b/crypto_plugins/flutter_libepiccash
index 8830be2ba..238455f2b 160000
--- a/crypto_plugins/flutter_libepiccash
+++ b/crypto_plugins/flutter_libepiccash
@@ -1 +1 @@
-Subproject commit 8830be2ba661828d743be12df6f33d560448ed6a
+Subproject commit 238455f2b3fe39564cc617ed0ea45f22971aa644
diff --git a/scripts/android/build_all.sh b/scripts/android/build_all.sh
index 60aa13c6a..47c36fd79 100755
--- a/scripts/android/build_all.sh
+++ b/scripts/android/build_all.sh
@@ -4,7 +4,7 @@ set -x -e
 
 # libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 mkdir -p build
 . ./config.sh
diff --git a/scripts/android/build_all_campfire.sh b/scripts/android/build_all_campfire.sh
index 60aa13c6a..ccb8830b1 100755
--- a/scripts/android/build_all_campfire.sh
+++ b/scripts/android/build_all_campfire.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 mkdir -p build
 . ./config.sh
diff --git a/scripts/android/build_all_duo.sh b/scripts/android/build_all_duo.sh
index d67e700a8..cd1ba0174 100755
--- a/scripts/android/build_all_duo.sh
+++ b/scripts/android/build_all_duo.sh
@@ -4,9 +4,8 @@ set -x -e
 
 # todo: revisit following at some point
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 mkdir -p build
 . ./config.sh
diff --git a/scripts/ios/build_all.sh b/scripts/ios/build_all.sh
index bcb03e991..b9eab976f 100755
--- a/scripts/ios/build_all.sh
+++ b/scripts/ios/build_all.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 # ensure ios rust triples are there
 rustup target add aarch64-apple-ios
diff --git a/scripts/ios/build_all_campfire.sh b/scripts/ios/build_all_campfire.sh
index bcb03e991..b9eab976f 100755
--- a/scripts/ios/build_all_campfire.sh
+++ b/scripts/ios/build_all_campfire.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 # ensure ios rust triples are there
 rustup target add aarch64-apple-ios
diff --git a/scripts/ios/build_all_duo.sh b/scripts/ios/build_all_duo.sh
index 89e6f4641..24236e8a7 100755
--- a/scripts/ios/build_all_duo.sh
+++ b/scripts/ios/build_all_duo.sh
@@ -4,9 +4,8 @@ set -x -e
 
 # todo: revisit following at some point
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 # ensure ios rust triples are there
 rustup target add aarch64-apple-ios
diff --git a/scripts/linux/build_all.sh b/scripts/linux/build_all.sh
index 423646185..bdb3bd527 100755
--- a/scripts/linux/build_all.sh
+++ b/scripts/linux/build_all.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 # for arm
 # flutter-elinux clean
diff --git a/scripts/linux/build_all_campfire.sh b/scripts/linux/build_all_campfire.sh
index 423646185..bdb3bd527 100755
--- a/scripts/linux/build_all_campfire.sh
+++ b/scripts/linux/build_all_campfire.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 # for arm
 # flutter-elinux clean
diff --git a/scripts/linux/build_all_duo.sh b/scripts/linux/build_all_duo.sh
index 78067b478..91d2127cd 100755
--- a/scripts/linux/build_all_duo.sh
+++ b/scripts/linux/build_all_duo.sh
@@ -4,9 +4,8 @@ set -x -e
 
 # todo: revisit following at some point
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 # for arm
 # flutter-elinux clean
diff --git a/scripts/macos/build_all.sh b/scripts/macos/build_all.sh
index af608846f..2212929e8 100755
--- a/scripts/macos/build_all.sh
+++ b/scripts/macos/build_all.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 (cd ../../crypto_plugins/flutter_liblelantus/scripts/macos && ./build_all.sh )
 (cd ../../crypto_plugins/flutter_libepiccash/scripts/macos && ./build_all.sh )
diff --git a/scripts/macos/build_all_campfire.sh b/scripts/macos/build_all_campfire.sh
index af608846f..2212929e8 100755
--- a/scripts/macos/build_all_campfire.sh
+++ b/scripts/macos/build_all_campfire.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 (cd ../../crypto_plugins/flutter_liblelantus/scripts/macos && ./build_all.sh )
 (cd ../../crypto_plugins/flutter_libepiccash/scripts/macos && ./build_all.sh )
diff --git a/scripts/macos/build_all_duo.sh b/scripts/macos/build_all_duo.sh
index 8a53e5801..f4114c7ef 100755
--- a/scripts/macos/build_all_duo.sh
+++ b/scripts/macos/build_all_duo.sh
@@ -4,9 +4,8 @@ set -x -e
 
 # todo: revisit following at some point
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 (cd ../../crypto_plugins/flutter_liblelantus/scripts/macos && ./build_all.sh )
 (cd ../../crypto_plugins/flutter_libepiccash/scripts/macos && ./build_all.sh )
diff --git a/scripts/rust_version.sh b/scripts/rust_version.sh
index 8cda1229b..8cfada233 100755
--- a/scripts/rust_version.sh
+++ b/scripts/rust_version.sh
@@ -16,4 +16,13 @@ set_rust_to_1720() {
     echo "Rust version 1.72.0 is not installed. Please install it using 'rustup install 1.72.0'." >&2
     exit 1
   fi
-}
\ No newline at end of file
+}
+
+set_rust_to_181() {
+  if rustup toolchain list | grep -q "1.81"; then
+    rustup default 1.81
+  else
+    echo "Rust version 1.81 is not installed. Please install it using 'rustup install 1.81'." >&2
+    exit 1
+  fi
+}
diff --git a/scripts/windows/build_all.sh b/scripts/windows/build_all.sh
index 191a46cc0..6daedb861 100755
--- a/scripts/windows/build_all.sh
+++ b/scripts/windows/build_all.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 mkdir -p build
 (cd ../../crypto_plugins/flutter_libepiccash/scripts/windows && ./build_all.sh )
diff --git a/scripts/windows/build_all_campfire.sh b/scripts/windows/build_all_campfire.sh
index 191a46cc0..6daedb861 100755
--- a/scripts/windows/build_all_campfire.sh
+++ b/scripts/windows/build_all_campfire.sh
@@ -2,9 +2,8 @@
 
 set -x -e
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 mkdir -p build
 (cd ../../crypto_plugins/flutter_libepiccash/scripts/windows && ./build_all.sh )
diff --git a/scripts/windows/build_all_duo.sh b/scripts/windows/build_all_duo.sh
index 3e27eff02..f6ce810ef 100755
--- a/scripts/windows/build_all_duo.sh
+++ b/scripts/windows/build_all_duo.sh
@@ -4,9 +4,8 @@ set -x -e
 
 # todo: revisit following at some point
 
-# libepiccash requires old rust
 source ../rust_version.sh
-set_rust_to_1671
+set_rust_to_181
 
 mkdir -p build
 (cd ../../crypto_plugins/flutter_libepiccash/scripts/windows && ./build_all.sh )