diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 7398b94..95d8a1a 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -14,19 +14,19 @@ jobs:
           - os: ubuntu-latest
             target: x86_64-unknown-linux-gnu
             artifact_name: pacman
-            toolchain: 1.88.0
+            toolchain: 1.86.0
           - os: macos-13
             target: x86_64-apple-darwin
             artifact_name: pacman
-            toolchain: 1.88.0
+            toolchain: 1.86.0
           - os: macos-latest
             target: aarch64-apple-darwin
             artifact_name: pacman
-            toolchain: 1.88.0
+            toolchain: 1.86.0
           - os: windows-latest
             target: x86_64-pc-windows-gnu
             artifact_name: pacman.exe
-            toolchain: 1.88.0
+            toolchain: 1.86.0
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index bef75d5..19274fd 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -4,7 +4,7 @@ on: ["push", "pull_request"]
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN: 1.88.0
+  RUST_TOOLCHAIN: 1.86.0
 
 jobs:
   test:
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..cf6d0f5
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.86.0"