diff --git a/.github/workflows/nanvix-ci.yml b/.github/workflows/nanvix-ci.yml
index 10f19f308..50f954aa4 100644
--- a/.github/workflows/nanvix-ci.yml
+++ b/.github/workflows/nanvix-ci.yml
@@ -36,8 +36,6 @@ jobs:
       standalone-test-args: "test-functional"
       caller-event-name: ${{ github.event_name }}
       windows-test: true
-      docker-image: >-
-        ghcr.io/nanvix/nanvix-sdk-c-clang@sha256:f61737cb0780e6a2058c6d0bdf8ae5562db18de437173b2bcbbe6973abd3689f
     secrets:
       GH_TOKEN: ${{ secrets.GH_TOKEN || secrets.GITHUB_TOKEN }}
       DISPATCH_TOKEN: ${{ secrets.DISPATCH_TOKEN }}
@@ -54,8 +52,6 @@ jobs:
       standalone-test-args: "test-functional"
       caller-event-name: 'schedule'
       windows-test: true
-      docker-image: >-
-        ghcr.io/nanvix/nanvix-sdk-c-clang@sha256:f61737cb0780e6a2058c6d0bdf8ae5562db18de437173b2bcbbe6973abd3689f
     secrets:
       GH_TOKEN: ${{ secrets.GH_TOKEN || secrets.GITHUB_TOKEN }}
       DISPATCH_TOKEN: ${{ secrets.DISPATCH_TOKEN }}
diff --git a/.nanvix/nanvix.lock b/.nanvix/nanvix.lock
new file mode 100644
index 000000000..c3b176d00
--- /dev/null
+++ b/.nanvix/nanvix.lock
@@ -0,0 +1,89 @@
+# nanvix.lock - auto-generated by nanvix_zutil. DO NOT EDIT.
+
+[metadata]
+manifest-hash = "sha256:5dcae7a2ae021f494d71e0448a82222e02cc3a67ce7900800399cf5d2e4d74a0"
+nanvix-zutil-version = "0.15.3"
+
+[metadata.sdk]
+schema-version = 1
+sdk-version = "v0.20.0-sdk.2"
+provider-id = "c-clang"
+provider = "clang"
+role = "c"
+image-name = "ghcr.io/nanvix/nanvix-sdk-c-clang"
+image-digest = "sha256:880ed7e6a20fe9bf2536b1b3ba9bdbbd067a48f043ec9131d3dd398c65f11f35"
+image-ref = "ghcr.io/nanvix/nanvix-sdk-c-clang@sha256:880ed7e6a20fe9bf2536b1b3ba9bdbbd067a48f043ec9131d3dd398c65f11f35"
+nanvix-tag = "v0.20.0"
+nanvix-version = "0.20.0"
+nanvix-commit = "edda6ab30be8c804a9a2baeaca0195945c3e3bc1"
+sysroot-sha256 = "2bebdcf3679936de83f125821ddc033aef5727532fc2d2e2c720023cb5836788"
+
+[metadata.sdk.target]
+alias = "i686-nanvix"
+triple = "i686-unknown-nanvix"
+
+[metadata.sdk.toolchain]
+llvm_commit = "2540a4de042a39d88c4ecd920bf0351288f1dc4a"
+llvm_version = "22.1.8"
+port_branch = "nanvix/v22.1.8"
+
+[metadata.sdk.compat]
+abi = "static-elf"
+c_abi = "i686-nanvix-sysv-1"
+cxx_abi = "libc++"
+min_nanvix_os = "0.19.9"
+
+[metadata.sdk.features]
+compiler_rt = "builtins-only"
+dynamic_loader = false
+filesystem = true
+localization = true
+wide_chars = true
+
+
+[[package]]
+name = "nanvix"
+repo = "nanvix/nanvix"
+kind = "sysroot"
+ref-kind = "tag"
+ref-value = "0.20.0"
+resolved-tag = "v0.20.0"
+resolved-commitish = "edda6ab30be8c804a9a2baeaca0195945c3e3bc1"
+release-id = 352415131
+dependencies = []
+
+[[package.assets]]
+name = "nanvix-windows-x86-microvm-standalone-release-256mb-edda6ab30be8c804a9a2baeaca0195945c3e3bc1.zip"
+url = "https://github.com/nanvix/nanvix/releases/download/v0.20.0/nanvix-windows-x86-microvm-standalone-release-256mb-edda6ab30be8c804a9a2baeaca0195945c3e3bc1.zip"
+id = 473170262
+
+[[package.assets]]
+name = "nanvix-x86-microvm-single-process-release-256mb-edda6ab30be8c804a9a2baeaca0195945c3e3bc1.tar.bz2"
+url = "https://github.com/nanvix/nanvix/releases/download/v0.20.0/nanvix-x86-microvm-single-process-release-256mb-edda6ab30be8c804a9a2baeaca0195945c3e3bc1.tar.bz2"
+id = 473170304
+
+[[package.assets]]
+name = "nanvix-x86-microvm-standalone-release-256mb-edda6ab30be8c804a9a2baeaca0195945c3e3bc1.tar.bz2"
+url = "https://github.com/nanvix/nanvix/releases/download/v0.20.0/nanvix-x86-microvm-standalone-release-256mb-edda6ab30be8c804a9a2baeaca0195945c3e3bc1.tar.bz2"
+id = 473170309
+
+[[package]]
+name = "zlib"
+repo = "nanvix/zlib"
+kind = "dependency"
+ref-kind = "version"
+ref-value = "1.3.1-nanvix-0.20.0-sdk.2"
+resolved-tag = "1.3.1-nanvix-0.20.0-sdk.2"
+resolved-commitish = "nanvix/v1.3.1"
+release-id = 352904054
+dependencies = []
+
+[[package.assets]]
+name = "zlib-microvm-standalone-256mb.tar.gz"
+url = "https://github.com/nanvix/zlib/releases/download/1.3.1-nanvix-0.20.0-sdk.2/zlib-microvm-standalone-256mb.tar.gz"
+id = 474984229
+
+[[package.assets]]
+name = "zlib-microvm-standalone-256mb.zip"
+url = "https://github.com/nanvix/zlib/releases/download/1.3.1-nanvix-0.20.0-sdk.2/zlib-microvm-standalone-256mb.zip"
+id = 474984228
diff --git a/.nanvix/nanvix.toml b/.nanvix/nanvix.toml
index 8148bc237..515c7a0dd 100644
--- a/.nanvix/nanvix.toml
+++ b/.nanvix/nanvix.toml
@@ -11,3 +11,10 @@ memory = ["256mb"]
 
 [dependencies]
 zlib = "1.3.1"
+
+[toolchain]
+kind = "nanvix-sdk"
+provider = "c-clang"
+sdk-version = "v0.20.0-sdk.2"
+sdk-image = "ghcr.io/nanvix/nanvix-sdk-c-clang"
+sdk-digest = "sha256:880ed7e6a20fe9bf2536b1b3ba9bdbbd067a48f043ec9131d3dd398c65f11f35"