diff --git a/CondaPkg.toml b/CondaPkg.toml
index de18b3c6..8ebe709d 100644
--- a/CondaPkg.toml
+++ b/CondaPkg.toml
@@ -1,3 +1,6 @@
+[deps.libstdcxx]
+version = "<=julia"
+
 [deps.libstdcxx-ng]
 version = "<=julia"
 
diff --git a/Project.toml b/Project.toml
index 5645f2cf..aeb120bc 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,7 +17,7 @@ UnsafePointers = "e17b2a0c-0bdf-430a-bd0c-3a23cae4ff39"
 
 [compat]
 Aqua = "0 - 999"
-CondaPkg = "0.2.23"
+CondaPkg = "0.2.30"
 Dates = "1"
 Libdl = "1"
 MacroTools = "0.5"
diff --git a/docs/src/releasenotes.md b/docs/src/releasenotes.md
index 150879ce..7c4ba9fd 100644
--- a/docs/src/releasenotes.md
+++ b/docs/src/releasenotes.md
@@ -3,6 +3,7 @@
 ## Unreleased
 * Internal: Use heap-allocated types (PyType_FromSpec) to improve ABI compatibility.
 * Minimum supported Python version is now 3.9.
+* Better compatibility with libstdc++.
 
 ## 0.9.26 (2025-07-15)
 * Added PySide6 support to the GUI compatibility layer.