diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..72953c3
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "julia"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd10ebd..0e673e5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,16 +19,16 @@ jobs:
         os: [ubuntu-latest]
         arch: [x64]
     steps:
-      - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v2
+      - uses: actions/checkout@v7
+      - uses: julia-actions/setup-julia@v3
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v7
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/format_check.yml b/.github/workflows/format_check.yml
index b0e1b36..e2d30dd 100644
--- a/.github/workflows/format_check.yml
+++ b/.github/workflows/format_check.yml
@@ -13,13 +13,13 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Format check
         shell: julia --color=yes {0}
         run: |
           using Pkg
           # If you update the version, also update the style guide docs.
-          Pkg.add(PackageSpec(name="JuliaFormatter", version="1"))
+          Pkg.add(PackageSpec(name="JuliaFormatter", version="2"))
           using JuliaFormatter
           format("src", verbose=true)
           format("test", verbose=true)
diff --git a/src/models.jl b/src/models.jl
index 2d7acda..67e1e19 100644
--- a/src/models.jl
+++ b/src/models.jl
@@ -182,7 +182,7 @@ function get_oa_start(opt::Optimizer, x_start::Vector{Float64})
             # set slack variables start
             slack_start = s_start[slack_idxs]
             dim = length(slack_start)
-            oa_start[n.+(1:dim)] .= slack_start
+            oa_start[n .+ (1:dim)] .= slack_start
             n += dim
         end
 
@@ -192,7 +192,7 @@ function get_oa_start(opt::Optimizer, x_start::Vector{Float64})
             s_start_i = s_start[opt.oa_cone_idxs[i]]
             ext_start = Cones.extend_start(cache, s_start_i, opt)
             @assert ext_dim == length(ext_start)
-            oa_start[n.+(1:ext_dim)] .= ext_start
+            oa_start[n .+ (1:ext_dim)] .= ext_start
             n += ext_dim
         end
     end