diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f82483134..bd83c3f64 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -214,9 +214,6 @@ jobs:
           CPPSTD: c++11
         - SWIGLANG: ruby
           CPPSTD: c++11
-        - SWIGLANG: scilab
-          CPPSTD: c++11
-          os: ubuntu-18.04 # scilab 6.0
         - SWIGLANG: scilab
           CPPSTD: c++11
         - SWIGLANG: tcl
@@ -252,9 +249,6 @@ jobs:
           CPPSTD: c++14
         - SWIGLANG: ruby
           CPPSTD: c++14
-        - SWIGLANG: scilab
-          CPPSTD: c++14
-          os: ubuntu-18.04 # scilab 6.0
         - SWIGLANG: scilab
           CPPSTD: c++14
         - SWIGLANG: tcl