diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 11c8295..805028c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         rust:
           - stable
-          - "1.85"
+          - "1.91"
           - nightly
     steps:
       - name: Checkout sources
@@ -46,7 +46,7 @@ jobs:
       matrix:
         rust:
           - stable
-          - "1.85"
+          - "1.91"
           - nightly
     steps:
       - name: Checkout sources
diff --git a/Cargo.toml b/Cargo.toml
index 862e952..125d3c6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ edition = "2021"
 license = "Apache-2 or MIT"
 homepage = "https://github.com/acterglobal/uniffi-dart"
 description = "Dart Frontend for UniFFI"
-rust-version = "1.85"
+rust-version = "1.91"
 
 [features]
 defaults = []
@@ -38,7 +38,7 @@ uniffi_bindgen = { workspace = true }
 camino = "1"
 cargo_metadata = "0.18"
 serde = "1"
-toml = ">=0.8, <=0.9"
+toml = "1"
 genco = "0.17.5"
 proc-macro2 = "1.0.66"
 
diff --git a/flake.nix b/flake.nix
index ac61e5e..7ccafed 100644
--- a/flake.nix
+++ b/flake.nix
@@ -25,7 +25,7 @@
     flake-utils.lib.eachDefaultSystem (
       system:
       let
-        msrvVersion = "1.85.0";
+        msrvVersion = "1.91.0";
 
         rustExtensions = [
           "clippy"