diff --git a/HISTORY.rst b/HISTORY.rst
index 17bcc0b4..b53bc852 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -5,7 +5,7 @@ History
 0.3.8 (2024-09-29)
 ------------------
 * Upgrade readthedocs to PyData Sphinx Theme (:pr:`323`)
-* Upgrade backend to poetry (:pr:`322`)
+* Upgrade backend to poetry (:pr:`322`, :pr:`324`)
 * Optimise the beam cube implementation (:pr:`320`)
 * Support an `init_state` argument into both `Term.init_fields`
   and `Transformer.init_fields` (:pr:`319`)
diff --git a/pyproject.toml b/pyproject.toml
index 8efe4245..f62f70c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ readme = "README.rst"
 python = "^3.10"
 pytest = {version = "^8.0.0", optional = true}
 flaky = {version = "^3.8.1", optional = true}
-dask = {extras = ["array"], optional = true, version = "^2024.10.0"}
+dask = {extras = ["array"], optional = true, version = "^2024.0"}
 jax = {version = "^0.4.35", optional = true}
 jaxlib = {version = "^0.4.35", optional = true}
 scipy = {version = "^1.14.1", optional = true}
@@ -21,8 +21,8 @@ cupy = {version = "^13.3.0", optional = true}
 jinja2 = {version = "^3.1.4", optional = true}
 appdirs = "^1.4.4"
 decorator = "^5.1.1"
-numpy = ">=2.0.0"
-numba = "^0.60.0"
+numpy = "^2.0"
+numba = "^0.60"
 
 [tool.poetry.extras]
 astropy = ["astropy"]