diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 87f9470b..b3ea1498 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,28 +22,12 @@ jobs:
       - name: Does init() in platform/src/lib.rs contain all roc_fx functions? (Imperfect check)
         run: cat platform/src/lib.rs | grep -oP 'roc_fx_[^(\s]*' | sort | uniq -u | grep -q . && exit 1 || exit 0
 
-      - name: Downloading latest roc nightly
-        run: |
-          if [[ "${{ runner.os }}-${{ runner.arch }}" == "Linux-ARM64" ]]; then
-            curl -fOL https://github.com/roc-lang/roc/releases/download/nightly/roc_nightly-linux_arm64-latest.tar.gz
-          elif [[ "${{ runner.os }}" == "macOS" ]]; then
-            curl -fOL https://github.com/roc-lang/roc/releases/download/nightly/roc_nightly-macos_apple_silicon-latest.tar.gz
-          else
-            curl -fOL https://github.com/roc-lang/roc/releases/download/nightly/roc_nightly-linux_x86_64-latest.tar.gz
-          fi
-
-      - name: rename nightly tar
-        run: mv $(ls | grep "roc_nightly.*tar\.gz") roc_nightly.tar.gz
-
-      - name: decompress the tar
-        run: tar -xzf roc_nightly.tar.gz
-
-      - run: rm roc_nightly.tar.gz
-
-      - name: simplify nightly folder name
-        run: mv roc_nightly* roc_nightly
+      - uses: roc-lang/setup-roc@39c354a6a838a0089eea9068a0414f49b62c5c08
+        with:
+          # Note: nightly hashes are not verified because they are updated regularly.
+          version: nightly
 
-      - run: ./roc_nightly/roc version
+      - run: roc version
 
       - name: Install dependencies (Ubuntu)
         if: startsWith(matrix.os, 'ubuntu-')
@@ -60,7 +44,7 @@ jobs:
       - run: expect -v
 
       - name: Run all tests
-        run: ROC=./roc_nightly/roc EXAMPLES_DIR=./examples/ ./ci/all_tests.sh
+        run: ROC=roc EXAMPLES_DIR=./examples/ ./ci/all_tests.sh
 
       - name: Install dependencies for musl build
         if: startsWith(matrix.os, 'ubuntu-')
@@ -76,7 +60,7 @@ jobs:
       - name: Test building with musl target
         if: startsWith(matrix.os, 'ubuntu-')
         env:
-          ROC: ./roc_nightly/roc
+          ROC: roc
         run: |
           if [[ "${{ matrix.os}}" == *"-arm" ]]; then
             # TODO debug this: CARGO_BUILD_TARGET=aarch64-unknown-linux-musl $ROC build.roc
@@ -90,5 +74,5 @@ jobs:
         run: |
           # TODO remove `if` when above TODOs are done
           if [[ "${{ matrix.os }}" != *"-arm" ]]; then
-            NO_BUILD=1 IS_MUSL=1 ROC=./roc_nightly/roc EXAMPLES_DIR=./examples/ ./ci/all_tests.sh
+            NO_BUILD=1 IS_MUSL=1 ROC=roc EXAMPLES_DIR=./examples/ ./ci/all_tests.sh
           fi
diff --git a/.github/workflows/ci_nix.yml b/.github/workflows/ci_nix.yml
index c35a1120..6c1561c6 100644
--- a/.github/workflows/ci_nix.yml
+++ b/.github/workflows/ci_nix.yml
@@ -15,8 +15,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # macos-13 uses x86-64 machine, macos-14 & 15 use aarch64
-        os: [macos-13, macos-15, ubuntu-22.04, ubuntu-24.04-arm]
+        # macos-15-intel uses x86-64 machine, macos-14 & 15 use aarch64
+        os: [macos-15-intel, macos-15, ubuntu-22.04, ubuntu-24.04-arm]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index b8bbee34..c72bec1b 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -37,18 +37,12 @@ jobs:
       - name: Setup Pages
         uses: actions/configure-pages@v5
 
-      - name: Downloading latest roc nightly
-        run: |
-          curl -fOL https://github.com/roc-lang/roc/releases/download/nightly/roc_nightly-linux_x86_64-latest.tar.gz
-
-      - name: prep nightly tar for use
-        run: |
-          mv $(ls | grep "roc_nightly.*tar\.gz") roc_nightly.tar.gz
-          tar -xzf roc_nightly.tar.gz
-          rm roc_nightly.tar.gz
-          mv roc_nightly* roc_nightly
+      - uses: roc-lang/setup-roc@39c354a6a838a0089eea9068a0414f49b62c5c08
+        with:
+          # Note: nightly hashes are not verified because they are updated regularly.
+          version: nightly
 
-      - run: ./roc_nightly/roc version
+      - run: roc version
         
       - name: Create temp directory for docs
         run: mkdir -p ./temp_docs
@@ -101,7 +95,7 @@ jobs:
         env:
           ROC_DOCS_URL_ROOT: /basic-cli/main
         run: |
-          ./roc_nightly/roc docs ./platform/main.roc
+          roc docs ./platform/main.roc
 
           mkdir -p "./temp_docs/main"