diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 7b3f1e1..09d0854 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -15,9 +15,18 @@ jobs:
     strategy:
       matrix:
 # revert me        os: [ubuntu-latest, windows-latest, macos-latest]
-        os: [windows-latest]
+        os: [ubuntu-latest, windows-latest]
 
     steps:
+      - name: Install Knitro (Linux)
+        run: |
+          wget -nv -O knitro.tar.gz "$KNITRO_LINUX_URL"
+          mkdir -p /opt/knitro
+          tar xzf knitro.tar.gz -C /opt/knitro
+          echo "KNITRODIR=/opt/knitro/knitro-14.1.0-Linux64" >> "$GITHUB_ENV"
+        env:
+          KNITRO_LINUX_URL: ${{ secrets.KNITRO_LINUX_URL }}
+
       - name: Install Knitro (Windows)
         shell: powershell
         run: |
@@ -49,7 +58,10 @@ jobs:
 
       - name: Build with Maven (Ubuntu / MacOS)
         if: matrix.os != 'windows-latest'
-        run: ./mvnw --batch-mode -Pjacoco install
+        run: |
+          mvnw install:install-file -Dfile="$KNITRODIR/examples/Java/lib/bridj-0.7.0.jar" -DgroupId=com.artelys -DartifactId=bridj -Dversion=0.7.0 -Dpackaging=jar -DgeneratePom=true
+          mvnw install:install-file -Dfile="$KNITRODIR/examples/Java/lib/Knitro-Interfaces-2.5-KN_14.1.0.jar" -DgroupId=com.artelys -DartifactId=knitro-interfaces -Dversion=14.1.0 -Dpackaging=jar -DgeneratePom=true
+          ./mvnw --batch-mode -Pjacoco install
 
       - name: Build with Maven (Windows)
         if: matrix.os == 'windows-latest'