diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 68c4c40b..005317ed 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -4,64 +4,70 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-latest
-    timeout-minutes: 5
+    timeout-minutes: 10
     steps:
-
+      
     - name: setup directory
       shell: bash
       run: |
         mkdir -p "${{ github.workspace }}/testdatapath"
-
+    
     # set GOPATH
     - name: setup env
       shell: bash
       run: |
         echo "${{ github.workspace }}/go/bin:" >> $GITHUB_PATH
         echo "GOPATH=${{ github.workspace }}/go" >> $GITHUB_ENV
-
+    
     - name: Install Go
       if: success()
       uses: actions/setup-go@v1
       with:
         go-version: 1.13
       id: go
-
+    
     - name: checkout
       uses: actions/checkout@v2
       with:
         fetch-depth: 1
         path: go/src/github.com/${{ github.repository }}
-
+    
     - name: Get dependencies
       run: |
         cd $GOPATH/src/github.com/${{ github.repository }}
         go get -v -d ./...
-
+    
     - name: Build
       shell: bash
       run: |
         cd $GOPATH/src/github.com/${{ github.repository }}/cmd/utreexoserver
         go build -v
-
+    
     - name: Build
       shell: bash
       run: |
         cd $GOPATH/src/github.com/${{ github.repository }}/cmd/utreexoclient
         go build -v
-
+    
     - name: Run unit tests
       shell: bash
       run: |
         cd $GOPATH/src/github.com/${{ github.repository }}
-        go test -v ./accumulator
-
+        go test -v ./accumulator -race -covermode atomic -coverprofile=covprofile
+    
+    - name: Send coverage
+      uses: shogo82148/actions-goveralls@v1
+      with:
+        path-to-profile: "covprofile"
+        working-directory: "${{ github.workspace }}/go/src/github.com/${{ github.repository }}"
+    
     - name: Run integration tests
       shell: bash
       run: |
         cd $GOPATH/src/github.com/${{ github.repository }}
         ./test/install_bitcoind.sh
         ./test/csn_bridge.sh "./cmd/utreexoserver/utreexoserver" "./cmd/utreexoclient/utreexoclient" "${{ github.workspace }}/testdatapath"
-
+    
     - name: Upload testdata
       uses: actions/upload-artifact@v2
       with:
@@ -74,13 +80,14 @@ jobs:
     needs: Build
     timeout-minutes: 5
     steps:
+    
     # set GOPATH
     - name: setup env
       shell: bash
       run: |
         echo "${{ github.workspace }}/go/bin:" >> $GITHUB_PATH
         echo "GOPATH=${{ github.workspace }}/go" >> $GITHUB_ENV
-
+    
     - uses: actions/download-artifact@v2
       with:
         name: testdatapath
@@ -108,7 +115,7 @@ jobs:
       run: |
         cd $GOPATH/src/github.com/${{ github.repository }}/cmd/utreexoserver
         go install -v
-
+    
     - name: checkout
       uses: actions/checkout@v2
       with: