diff --git a/pyproject.toml b/pyproject.toml
index 26b696a9..0dca77b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-cli = ["rich>=13,<15"]
+cli = ["rich>=13,<16"]
 fast = [
     "jax>=0.4",
     "jaxlib>=0.4",
@@ -83,7 +83,7 @@ dev = [
     "perflint>=0.7.1,<0.9.0",
     "pytest>=7.2,<10.0",
     "pytest-cov>=4,<6",
-    "rich>=13,<15",
+    "rich>=13,<16",
     "thermo>=0.2",
     "ruff>=0.0.210,<0.16.3",
     "seaborn>=0.12,<0.14",