diff --git a/pyproject.toml b/pyproject.toml
index 7f09d9a9..ab23d0b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dev = [
     "ruff==0.15.22",
 ]
 thermoml = [
-    "rdkit==2026.3.4",
+    "rdkit==2026.3.5",
     "thermo==0.6.1",
 ]