diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e06e8ec0..981b1856 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -34,11 +34,11 @@ jobs:
         run: go build -v ./...
 
       - name: Build X
-        run: go build -C x -o "${{ env.OUTPUT_DIR }}/" -v ./...
+        run: go -C x build -tags psiphon -o "${{ env.OUTPUT_DIR }}/" -v ./...
       
       - name: Build Go Mobile
         if: matrix.os == 'macos-latest' || matrix.os == 'ubuntu-latest'
-        run: go build -C x -o "${{ env.OUTPUT_DIR }}/" golang.org/x/mobile/cmd/gomobile golang.org/x/mobile/cmd/gobind
+        run: go -C x build -o "${{ env.OUTPUT_DIR }}/" golang.org/x/mobile/cmd/gomobile golang.org/x/mobile/cmd/gobind
 
       - name: Build Mobileproxy (Android)
         if: matrix.os == 'ubuntu-latest'