diff --git a/pyproject.toml b/pyproject.toml
index 65596e1..7024e95 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ dependencies = [
 [project.optional-dependencies]
 tf = [
     "tensorflow>=2.21",
-    "keras>=3.14",
+    "keras>=3.15.0",
 ]
 full = [
     "heuristic-hpo[tf]",
diff --git a/uv.lock b/uv.lock
index bd35a1e..919174f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -272,7 +272,7 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "heuristic-hpo", extras = ["tf"], marker = "extra == 'full'" },
-    { name = "keras", marker = "extra == 'tf'", specifier = ">=3.14" },
+    { name = "keras", marker = "extra == 'tf'", specifier = ">=3.15.0" },
     { name = "numpy", specifier = ">=2.0" },
     { name = "scikit-learn", specifier = ">=1.9.0" },
     { name = "scipy", specifier = ">=1.10" },
@@ -316,7 +316,7 @@ wheels = [
 
 [[package]]
 name = "keras"
-version = "3.14.1"
+version = "3.15.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "absl-py" },
@@ -328,9 +328,9 @@ dependencies = [
     { name = "packaging" },
     { name = "rich" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/35/e7/97a7664581b73e4f9ff1d3a767a493b6ac5d3e0ed1926bd2b6b2c8bbccd7/keras-3.14.1.tar.gz", hash = "sha256:ef479173102ad29db89b53c232efdc3fb5ad57c28bc27ead59f3e78a1eecd05b", size = 1263647, upload-time = "2026-05-07T21:43:35.112Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/02/0a/c2524cda024e5b24038726de899c4b0ae2603dd0324a30cbc129d6b6314e/keras-3.15.0.tar.gz", hash = "sha256:0123749ac2a704d63f691994b18e432e006cb8ae910cc0ea7035d777aed9c00d", size = 1326815, upload-time = "2026-06-24T23:17:12.332Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/02/03/184267c1d09783dd070f1ddfd0d4beb7503139dfc7bd75b422867cf282fd/keras-3.14.1-py3-none-any.whl", hash = "sha256:ebd2c14d2af3c9de18083604d408483996407fc7d2f9ebd1d565961f96608c29", size = 1628606, upload-time = "2026-05-07T21:43:32.737Z" },
+    { url = "https://files.pythonhosted.org/packages/d4/16/d506c09bbff25927a65d13c542cb4eedc2d573e304f38b6ac3f49ed6be9b/keras-3.15.0-py3-none-any.whl", hash = "sha256:9bbd7df12b7b53500d00dc24d97b7e066c771260482cb7118de0b7687a7a2781", size = 1696954, upload-time = "2026-06-24T23:17:10.808Z" },
 ]
 
 [[package]]