diff --git a/site-config/ebrainslab/packages.yaml b/site-config/ebrainslab/packages.yaml
index 44e6777d5248befff4998eb3ffa1acb4bcd38878..90978f937e756cb1ef177b465f00b5b7926be54f 100644
--- a/site-config/ebrainslab/packages.yaml
+++ b/site-config/ebrainslab/packages.yaml
@@ -2,10 +2,10 @@ packages:
     all:
         # collab-specific settings
         target: [x86_64]
-        compiler: [gcc@13]
+        compiler: [gcc@13.3.0]
     python:
         # collab-specific settings
-        require: "@3.11"
+        require: "@3.11.10"
     r:
         # EM: +X fixes build for collab
         require: "@4.3.3+X"