diff --git a/pyproject.toml b/pyproject.toml
index 8ab48b17b79104717253d269cbab868c90b0416d..aa97e26dcaeccdc8587b01d1a1bb1db85a8eb572 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ AIDGE_DEPENDENCIES = "" # format => "dep_1 dep_2 ... dep_n"
 [tool.cibuildwheel.linux]
 before-build = ["bash .gitlab/ci/cibuildwheel_build_deps_before_build_wheel.sh ${AIDGE_DEPENDENCIES}"]
 [tool.cibuildwheel.windows]
-before-build = [" .\.gitlab\ci\cibuildwheel_build_deps_before_build_wheel.ps1 --deps ${AIDGE_DEPENDENCIES}"]
+before-build = [".\\.gitlab\\ci\\cibuildwheel_build_deps_before_build_wheel.ps1 --deps ${AIDGE_DEPENDENCIES}"]
 
 #####################################################
 # SETUPTOOLS