diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d01df2aafdf17b121331bf57a4fc3865ea8df76c..14c00c4438cdd5e418e8543c11c531a31cbb9378 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,7 +9,7 @@ variables:
 default:
   # built via:
   #     docker load < $(nix-build nix/docker-image.nix)
-  image: registry.k0.hswaw.net/q3k/flow3r-build:wlzk2mlpfymmpzbi4cs6vlgmbviz0pl1
+  image: registry.k0.hswaw.net/q3k/flow3r-build:v4ljgs5czzm6j79m7r30vw6xz6990kkv
 
 clang-tidy:
   stage: check
diff --git a/nix/docker-image.nix b/nix/docker-image.nix
index 8f557176c3dec23f0d6f203966fc74714b4d93d7..4e08274202e299711028abd357768a55ef1ae885 100644
--- a/nix/docker-image.nix
+++ b/nix/docker-image.nix
@@ -21,6 +21,10 @@ pkgs.dockerTools.buildImage {
       (python3.withPackages (ps: with ps; [
         sphinx sphinx_rtd_theme
         black
+        
+        # simulator deps
+        pygame wasmer
+        wasmer-compiler-cranelift
       ]))
 
       # random build tools