[github-actions] Fix build workflow for Linux/ubuntu
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7aee501..2032545 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@
     - name: install dependencies
       run: |
           sudo apt-get update
-          sudo apt-get install cython
+          sudo apt-get install cython3
     - name: prepare environment
       run: |
           echo "target_triplet=`gcc -dumpmachine`" >> $GITHUB_ENV