diff --git a/.github/workflows/_external_rust_tests.yml b/.github/workflows/_external_rust_tests.yml
index e787b85f668..85030480bc7 100644
--- a/.github/workflows/_external_rust_tests.yml
+++ b/.github/workflows/_external_rust_tests.yml
@@ -28,9 +28,6 @@ jobs:
     runs-on: [self-hosted]
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
-      - uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
-        with:
-          tool: nextest
       - name: Install python dependencies
         run: pip install pyopenssl --upgrade --break-system-packages
       - name: cargo test
diff --git a/.github/workflows/_move_tests.yml b/.github/workflows/_move_tests.yml
index a98c7ad8f3f..42d8abb4fe4 100644
--- a/.github/workflows/_move_tests.yml
+++ b/.github/workflows/_move_tests.yml
@@ -21,9 +21,6 @@ jobs:
     runs-on: [self-hosted]
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
-      - uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
-        with:
-          tool: nextest
       - name: Run move tests
         run: |
           cargo nextest run -p iota-framework-tests -- unit_tests::
diff --git a/.github/workflows/_rust_tests.yml b/.github/workflows/_rust_tests.yml
index 9aeccdffe2d..1210ce5c880 100644
--- a/.github/workflows/_rust_tests.yml
+++ b/.github/workflows/_rust_tests.yml
@@ -40,10 +40,7 @@ jobs:
     runs-on: [self-hosted]
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
-      - uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
-        with:
-          tool: nextest
-      - name: cargo test
+      - name: cargo nextest
         run: |
           array=(${{ inputs.changedCrates }})
 
@@ -128,9 +125,6 @@ jobs:
       MSIM_WATCHDOG_TIMEOUT_MS: 60000
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
-      - uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
-        with:
-          tool: nextest
       - name: setup filter
         run: |
           array=(${{ inputs.changedCrates }})
@@ -187,9 +181,6 @@ jobs:
           - 5432:5432
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
-      - uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
-        with:
-          tool: nextest
       - name: Install postgresql-client
         run: sudo apt-get install -y postgresql-client
       - name: Setup db
diff --git a/.github/workflows/cargo_llvm_cov.yml b/.github/workflows/cargo_llvm_cov.yml
index 15000ad8e5b..af07eb912b1 100644
--- a/.github/workflows/cargo_llvm_cov.yml
+++ b/.github/workflows/cargo_llvm_cov.yml
@@ -42,10 +42,10 @@ jobs:
 
       - uses: bmwill/rust-cache@cb2cf0cc7c5198d3364b9630e2c3d457f160790c # v1.4.0
 
-      - name: Install nextest and cargo-llvm-cov
+      - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
         with:
-          tool: nextest,cargo-llvm-cov
+          tool: cargo-llvm-cov
 
       - name: Set Swap Space
         uses: actionhippie/swap-space@73376950a0019f8e1f6a3d3d2673fe2aed74ae17 # v1.0.2
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 3e02cfc233f..d35946baa47 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -109,8 +109,5 @@ jobs:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
         with:
           ref: ${{ env.IOTA_REF }}
-      - uses: taiki-e/install-action@375e0c7f08a66b8c2ba7e7eef31a6f91043a81b0 # v2.44.38
-        with:
-          tool: nextest
       - name: Run simtest
         run: scripts/simtest/simtest-run.sh