diff --git a/pixi.toml b/pixi.toml
index e332c5ce8..7c1872cc5 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -13,13 +13,10 @@ rich = "*"
 fuzzywuzzy = "*"
 logzero = "*"
 yaspin = "*"
-pytest = "*"
 coverage = "*"
 pytest-html = "*"
 pytest-cov = "*"
 allure-pytest = "*"
-time-machine = "==2.13.0"
-pytest-timeout = ">=2.2.0"
 
 # Spécification avec channel explicite
 bsread = { version = "*", channel = "paulscherrerinstitute" }
@@ -42,3 +39,8 @@ pytest-json-report = "*"
 pytest-cov = "*"
 pluggy = "*"
 coverage = "*"
+
+[test-dependencies]
+pytest = "*"
+time-machine = { version = "~2.13.0", channel = "pypi" }  
+pytest-timeout = "~2.2.0"
\ No newline at end of file