diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6c43f92a46141073b7c95b26530c8bcdf908f9b1..b6f7552f57ad377c46f382f131c32ae6e3d2e35e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,7 @@ variables:
   TERM: linux
   MATLAB_VERSION: R2021b
   OLD_MATLAB_VERSION: R2014a
-  OCTAVE_VERSION: 6.3.0
+  OCTAVE_VERSION: 6.4.0
 
 before_script:
   - git clone https://git.dynare.org/Dynare/m-unit-tests