diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a6c73db29b..8f9b26da3c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -52,7 +52,7 @@ jobs:
           run: |
             sudo apt-get update
             sudo apt-get install -y --allow-unauthenticated libopenblas-dev liblapack-dev g++ libboost-all-dev libcereal-dev
-            curl https://files.mlpack.org/armadillo-8.400.0.tar.xz | tar -xvJ && cd armadillo*
+            curl https://files.mlpack.org/armadillo-8.400.0.tar.gz | tar -xzvJ && cd armadillo*
             cmake . && make && sudo make install && cd ..
 
         - name: Install R-bindings dependencies