diff --git a/pyproject.toml b/pyproject.toml
index 1dd6d40189..93a7e82721 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ dependencies = [
   # Also upgrade requirements_test_min.txt.
   # Pinned to dev of second minor update to allow editable installs and fix primer issues,
   # see https://github.com/pylint-dev/astroid/issues/1341
-  "astroid>=4.0.0b2,<=4.1.0.dev0",
+  "astroid>=4.0.0rc0,<=4.1.0.dev0",
   "colorama>=0.4.5; sys_platform=='win32'",
   "dill>=0.2; python_version<'3.11'",
   "dill>=0.3.6; python_version>='3.11'",
@@ -94,7 +94,7 @@ docs = [
 # Configuration for the build system
 test-min = [
   # Base test dependencies
-  "astroid==4.0.0b2",                   # Pinned to a specific version for tests
+  "astroid==4.0.0rc0",                  # Pinned to a specific version for tests
   "py~=1.11.0",
   "pytest~=8.4",
   "pytest-benchmark~=5.1",
diff --git a/requirements_test_min.txt b/requirements_test_min.txt
index f19a97ba74..a026887d1d 100644
--- a/requirements_test_min.txt
+++ b/requirements_test_min.txt
@@ -1,6 +1,6 @@
 .[testutils,spelling]
 # astroid dependency is also defined in pyproject.toml
-astroid==4.0.0b2  # Pinned to a specific version for tests
+astroid==4.0.0rc0  # Pinned to a specific version for tests
 typing-extensions~=4.15
 py~=1.11.0
 pytest~=8.4