diff --git a/.github/codecov.yml b/.github/codecov.yml
new file mode 100644
index 0000000..216698d
--- /dev/null
+++ b/.github/codecov.yml
@@ -0,0 +1,9 @@
+coverage:
+  status:
+    project:
+      default:
+        threshold: 0.5%
+        removed_code_behavior: fully_covered_patch
+    patch:
+      default:
+        target: 80%
\ No newline at end of file
diff --git a/.github/workflows/CI-nightly.yml b/.github/workflows/CI-nightly.yml
deleted file mode 100644
index f48884a..0000000
--- a/.github/workflows/CI-nightly.yml
+++ /dev/null
@@ -1,48 +0,0 @@
-name: CI (Julia nightly)
-
-on:
-  pull_request:
-    branches:
-      - master
-      - dev
-  push:
-    branches:
-      - master
-      - dev
-    tags: '*'
-
-jobs:
-  test-julia-nightly:
-    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        julia-version:
-          - "nightly"
-        os:
-          - ubuntu-latest
-          - macos-latest
-          - windows-latest
-        julia-arch:
-          - x64
-    steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
-        with:
-          version: ${{ matrix.julia-version }}
-          arch: ${{ matrix.julia-arch }}
-      - name: Cache artifacts
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-artifacts
-        with:
-          path: |
-            ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-test-${{ env.cache-name }}-
-            ${{ runner.os }}-test-
-            ${{ runner.os }}-
-      - uses: julia-actions/julia-buildpkg@v1
-      - uses: julia-actions/julia-runtest@v1
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 81d7ff4..349cab8 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -47,6 +47,5 @@ jobs:
       - uses: julia-actions/julia-runtest@latest
       - uses: julia-actions/julia-uploadcodecov@v0.1
         continue-on-error: true
-      - uses: julia-actions/julia-uploadcoveralls@v0.1
-        continue-on-error: true
+