diff --git a/.github/workflows/check-and-build-and-test.yml b/.github/workflows/check-and-build-and-test.yml
index 7c7f050..7cc5cc5 100644
--- a/.github/workflows/check-and-build-and-test.yml
+++ b/.github/workflows/check-and-build-and-test.yml
@@ -12,7 +12,7 @@ env:
 jobs:
   formatting:
     runs-on: ubuntu-latest
-    timeout-minutes: 5
+    timeout-minutes: 2
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -61,7 +61,7 @@ jobs:
       fail-fast: false # WIP: debugging
     name: Check and build ${{ matrix.supporteds.target }} (on ${{ matrix.supporteds.runner }})
     runs-on: ${{ matrix.supporteds.runner }}
-    timeout-minutes: 15
+    timeout-minutes: 5
     env:
       # https://github.com/rust-lang/stacker/issues/80#issuecomment-1547991131
       CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
@@ -126,7 +126,7 @@ jobs:
             target: x86_64-pc-windows-msvc
     name: Test ${{ matrix.supporteds.target }} (on ${{ matrix.supporteds.runner }})
     runs-on: ${{ matrix.supporteds.runner }}
-    timeout-minutes: 15
+    timeout-minutes: 5
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -143,7 +143,7 @@ jobs:
 
   minimal-dependencies-check-build-and-test:
     runs-on: ubuntu-latest
-    timeout-minutes: 15
+    timeout-minutes: 5
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4