diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index d386aef5..47a0aae5 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        toolchain: ["1.70.0", "stable", "nightly"]
+        toolchain: ["1.75.0", "stable", "nightly"]
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
diff --git a/Cargo.toml b/Cargo.toml
index 1d15512c..0393240c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ keywords = ["bit", "bitmask", "bitflags", "flags"]
 categories = ["no-std"]
 repository = "https://github.com/GrayJack/bitflag-attr"
 homepage = "https://github.com/GrayJack/bitflag-attr"
-rust-version = "1.70.0"
+rust-version = "1.75.0"
 exclude = ["/tests", "/.github"]
 
 [lib]
diff --git a/src/lib.rs b/src/lib.rs
index b92c5269..4dcaf815 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -749,7 +749,7 @@ fn bitflag_impl(attr: TokenStream, item: TokenStream) -> Result<TokenStream> {
         #debug_impl
 
         impl #ty_name {
-            const FLAGS: &[(&str, #ty_name)] = &[#((#all_flags_names , #all_flags) ,)*];
+            const FLAGS: &'static [(&'static str, #ty_name)] = &[#((#all_flags_names , #all_flags) ,)*];
 
             /// Yield a set of contained flags values.
             ///
@@ -811,7 +811,7 @@ fn bitflag_impl(attr: TokenStream, item: TokenStream) -> Result<TokenStream> {
 
             /// Helper for formatting in human readable format. Write a flags value as text,
             /// ignoring any unknown bits.
-            pub(crate) fn to_writer_truncate<W>(&self, mut writer: W) -> ::core::fmt::Result
+            pub(crate) fn to_writer_truncate<W>(&self, writer: W) -> ::core::fmt::Result
             where
                 W: ::core::fmt::Write
             {