diff --git a/.github/workflows/nanvix-ci.yml b/.github/workflows/nanvix-ci.yml
index bb9f4f88f..3fba4bfb3 100644
--- a/.github/workflows/nanvix-ci.yml
+++ b/.github/workflows/nanvix-ci.yml
@@ -25,9 +25,9 @@ concurrency:
 jobs:
   ci:
     if: github.event_name != 'schedule' && github.event_name != 'workflow_dispatch'
-    uses: nanvix/workflows/.github/workflows/nanvix-ci.yml@v1.15.0
+    uses: nanvix/workflows/.github/workflows/nanvix-ci.yml@v2.0.0
     with:
-      zutil-version: "v0.7.48"
+      zutil-version: "v0.8.1"
       platforms: '["microvm"]'
       process-modes: '["multi-process","single-process","standalone"]'
       memory-sizes: '["256mb"]'
@@ -35,15 +35,16 @@ jobs:
       skip-full-test-modes: '["multi-process","single-process","standalone"]'
       caller-event-name: ${{ github.event_name }}
       windows-test: true
+      docker-image: "ghcr.io/nanvix/toolchain-gcc:sha-34a3641" # yamllint disable-line rule:line-length
     secrets:
       GH_TOKEN: ${{ secrets.GH_TOKEN || secrets.GITHUB_TOKEN }}
       DISPATCH_TOKEN: ${{ secrets.DISPATCH_TOKEN }}
 
   ci-scheduled:
     if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
-    uses: nanvix/workflows/.github/workflows/nanvix-ci.yml@v1.15.0
+    uses: nanvix/workflows/.github/workflows/nanvix-ci.yml@v2.0.0
     with:
-      zutil-version: "v0.7.48"
+      zutil-version: "v0.8.1"
       platforms: '["microvm"]'
       process-modes: '["multi-process","single-process","standalone"]'
       memory-sizes: '["256mb"]'
@@ -51,6 +52,7 @@ jobs:
       skip-full-test-modes: '["multi-process","single-process","standalone"]'
       caller-event-name: 'schedule'
       windows-test: true
+      docker-image: "ghcr.io/nanvix/toolchain-gcc:sha-34a3641" # yamllint disable-line rule:line-length
     secrets:
       GH_TOKEN: ${{ secrets.GH_TOKEN || secrets.GITHUB_TOKEN }}
       DISPATCH_TOKEN: ${{ secrets.DISPATCH_TOKEN }}
diff --git a/z.ps1 b/z.ps1
index d76d191ba..a7fdde424 100644
--- a/z.ps1
+++ b/z.ps1
@@ -15,7 +15,7 @@ $zutilVersion = if ($env:NANVIX_ZUTIL_VERSION) {
     $env:NANVIX_ZUTIL_VERSION
 }
 else {
-    "0.7.48"
+    "0.8.1"
 }
 $zutilVersion = $zutilVersion -replace "^v", ""
 
diff --git a/z.sh b/z.sh
index 4704c926c..6c99ab5bb 100755
--- a/z.sh
+++ b/z.sh
@@ -7,7 +7,7 @@
 
 set -euo pipefail
 
-PINNED_VERSION="0.7.48"
+PINNED_VERSION="0.8.1"
 RAW_ZUTIL_VERSION="${NANVIX_ZUTIL_VERSION:-$PINNED_VERSION}"
 ZUTIL_VERSION="${RAW_ZUTIL_VERSION#v}"
 REPO_ROOT="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd -P)"