diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 01820239..56d96664 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -4,14 +4,12 @@ on: [pull_request]
 jobs:
   lint:
     name: Linters
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-        with:
-          depth: 1
 
       - name: golangci-lint
-        uses: docker://reviewdog/action-golangci-lint:v1
+        uses: reviewdog/action-golangci-lint@v1
         with:
           github_token: ${{ secrets.github_token }}
           golangci_lint_flags: "--config=.golangci.yaml"
@@ -25,15 +23,13 @@ jobs:
 
   tests:
     name: Tests
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-        with:
-          depth: 1
 
-      - uses: actions/setup-go@v1
+      - uses: actions/setup-go@v2
         with:
-          go-version: '1.13.3'
+          go-version: '1.14'
 
       - run: make tests
         env:
diff --git a/build/Dockerfile-controller b/build/Dockerfile-controller
index 0edff53b..c2a07bfc 100644
--- a/build/Dockerfile-controller
+++ b/build/Dockerfile-controller
@@ -13,6 +13,6 @@ RUN make controller_build
 FROM alpine:3.11
 ENTRYPOINT ["/app/dark-controller"]
 WORKDIR /app
-RUN apk --update --no-cache add ca-certificates=20191127-r1 && update-ca-certificates
+RUN apk --update --no-cache add ca-certificates=20191127-r2 && update-ca-certificates
 
 COPY --from=build /app/dark-controller /app/dark-controller
diff --git a/build/Dockerfile-converter b/build/Dockerfile-converter
index d87c1480..9258e399 100644
--- a/build/Dockerfile-converter
+++ b/build/Dockerfile-converter
@@ -13,6 +13,6 @@ RUN make converter_build
 FROM alpine:3.11
 ENTRYPOINT ["/app/dark-converter"]
 WORKDIR /workspace
-RUN apk --update --no-cache add ca-certificates=20191127-r1 && update-ca-certificates
+RUN apk --update --no-cache add ca-certificates=20191127-r2 && update-ca-certificates
 
 COPY --from=build /app/dark-converter /app/dark-converter