diff --git a/.github/workflows/CompatHelper.yml b/.github/workflows/CompatHelper.yml
index 7bb83b0d9..95ec3c2b4 100644
--- a/.github/workflows/CompatHelper.yml
+++ b/.github/workflows/CompatHelper.yml
@@ -18,7 +18,7 @@ jobs:
         run: which julia
         continue-on-error: true
       - name: Install Julia, but only if it is not already available in the PATH
-        uses: julia-actions/setup-julia@v1
+        uses: julia-actions/setup-julia@v2
         with:
           version: '1'
           arch: ${{ runner.arch }}
diff --git a/.github/workflows/DocNav.yml b/.github/workflows/DocNav.yml
new file mode 100644
index 000000000..3d322f46e
--- /dev/null
+++ b/.github/workflows/DocNav.yml
@@ -0,0 +1,49 @@
+name: Add Navbar
+
+on:
+  page_build:  # Triggers the workflow on push events to gh-pages branch
+  workflow_dispatch:  # Allows manual triggering
+  schedule:
+    - cron: '0 0 * * 0'  # Runs every week on Sunday at midnight (UTC)
+
+jobs:
+  add-navbar:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout gh-pages
+        uses: actions/checkout@v4
+        with:
+          ref: gh-pages
+          fetch-depth: 0
+
+      - name: Download insert_navbar.sh
+        run: |
+          curl -O https://raw.githubusercontent.com/TuringLang/turinglang.github.io/main/assets/scripts/insert_navbar.sh
+          chmod +x insert_navbar.sh
+
+      - name: Update Navbar
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email github-actions[bot]@users.noreply.github.com
+
+          # Define the URL of the navbar to be used
+          NAVBAR_URL="https://raw.githubusercontent.com/TuringLang/turinglang.github.io/main/assets/scripts/JuliaGPNavbar.html"
+         
+          # Update all HTML files in the current directory (gh-pages root)
+          ./insert_navbar.sh . $NAVBAR_URL
+         
+          # Remove the insert_navbar.sh file
+          rm insert_navbar.sh
+         
+          # Check if there are any changes
+          if [[ -n $(git status -s) ]]; then
+            git add .
+            git commit -m "Added navbar and removed insert_navbar.sh"
+            git push "https://${GITHUB_ACTOR}:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git" gh-pages
+          else
+            echo "No changes to commit"
+          fi
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 41ad36a17..671b761ad 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -17,7 +17,7 @@ jobs:
     steps:
       # setup
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.7'
       - uses: julia-actions/julia-buildpkg@v1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db2a828fc..3bcdcafd4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,11 +36,11 @@ jobs:
           - 'Others'
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
         with:
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 3f39a3fd3..732212c62 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: 1
       - run: |
diff --git a/Project.toml b/Project.toml
index 24da5ddcc..249f032ec 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "KernelFunctions"
 uuid = "ec8451be-7e33-11e9-00cf-bbf324bd1392"
-version = "0.10.63"
+version = "0.10.64"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
diff --git a/src/basekernels/periodic.jl b/src/basekernels/periodic.jl
index 2758d7f94..aeadf5e5a 100644
--- a/src/basekernels/periodic.jl
+++ b/src/basekernels/periodic.jl
@@ -34,7 +34,7 @@ PeriodicKernel(T::DataType, dims::Int=1) = PeriodicKernel(; r=ones(T, dims))
 
 metric(κ::PeriodicKernel) = Sinus(κ.r)
 
-kappa(::PeriodicKernel, d::Real) = exp(-0.5d)
+kappa(::PeriodicKernel, d::Real) = exp(-d / 2)
 
 function Base.show(io::IO, κ::PeriodicKernel)
     return print(io, "Periodic Kernel, length(r) = $(length(κ.r))")
diff --git a/test/basekernels/periodic.jl b/test/basekernels/periodic.jl
index 540947b1b..c33569714 100644
--- a/test/basekernels/periodic.jl
+++ b/test/basekernels/periodic.jl
@@ -8,6 +8,7 @@
     @test k(v1, v2) ≈ exp(-0.5 * sum(abs2, sinpi.(v1 - v2) ./ r))
     @test k(v1, v2) == k(v2, v1)
     @test PeriodicKernel(3)(v1, v2) == PeriodicKernel(; r=ones(3))(v1, v2)
+    @test PeriodicKernel(; r=Float32.(r))(Float32.(v1), Float32.(v2)) isa Float32
     @test repr(k) == "Periodic Kernel, length(r) = $(length(r))"
 
     # Standardised tests.