diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9818346..cf32fad 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -58,10 +58,7 @@ jobs:
       fail-fast: false
       matrix:
         unityVersion:
-          - 2018.4.15f1
           - 2019.2.11f1
-          - 2019.2.14f1
-          - 2019.2.17f1
     steps:
       # Checkout repository
       - uses: actions/checkout@v2