diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 863c12c..ccdf72b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
         with:
           components: clippy, rustfmt
       - uses: Swatinem/rust-cache@v2
@@ -65,7 +65,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
       - uses: Swatinem/rust-cache@v2
         with:
           shared-key: freemkv-unlock-ci
@@ -84,7 +84,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
         with:
           components: llvm-tools-preview
       - uses: Swatinem/rust-cache@v2
@@ -119,7 +119,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
       - uses: Swatinem/rust-cache@v2
         with:
           shared-key: freemkv-unlock-ci
@@ -142,7 +142,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
       - uses: Swatinem/rust-cache@v2
         with:
           shared-key: freemkv-unlock-ci
diff --git a/.github/workflows/qa.yml b/.github/workflows/qa.yml
index d85b944..b36f2ed 100644
--- a/.github/workflows/qa.yml
+++ b/.github/workflows/qa.yml
@@ -74,7 +74,7 @@ jobs:
       - uses: actions/checkout@v7
         with:
           path: freemkv-unlock
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
       - uses: Swatinem/rust-cache@v2
         with:
           workspaces: freemkv-unlock
@@ -90,7 +90,7 @@ jobs:
       - uses: actions/checkout@v7
         with:
           path: freemkv-unlock
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
         with:
           components: clippy
       - uses: Swatinem/rust-cache@v2
@@ -110,7 +110,7 @@ jobs:
       - uses: actions/checkout@v7
         with:
           path: freemkv-unlock
-      - uses: dtolnay/rust-toolchain@1.90.0
+      - uses: dtolnay/rust-toolchain@1.88.0
       - uses: Swatinem/rust-cache@v2
         with:
           workspaces: freemkv-unlock
diff --git a/Cargo.toml b/Cargo.toml
index 4b83009..cb13f48 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "freemkv-unlock"
 version = "1.6.13"
 edition = "2024"
-rust-version = "1.90"
+rust-version = "1.88"
 license = "MIT"
 description = "Unlock layer for the freemkv toolchain: the Unlocker contract + self-contained firmware/AACS/CSS unlocker modules. libfreemkv depends on this and dispatches via all_unlockers()."
 repository = "https://github.com/freemkv/freemkv-unlock"
@@ -26,3 +26,6 @@ sha1 = "0.10"
 sha2 = "0.11"
 aes = "0.9"
 rand = "0.10"
+
+[lints.clippy]
+uninlined_format_args = "allow"