diff --git a/pkgs/development/python-modules/brian2/default.nix b/pkgs/development/python-modules/brian2/default.nix
index 40276980b4b6..6ebd89a7b346 100644
--- a/pkgs/development/python-modules/brian2/default.nix
+++ b/pkgs/development/python-modules/brian2/default.nix
@@ -22,6 +22,12 @@ buildPythonPackage rec {
     hash = "sha256-x1EcS7PFCsjPYsq3Lt87SJRW4J5DE/OfdFs3NuyHiLw=";
   };
 
+  patches = [
+    # Fix deprecated numpy types
+    # https://sources.debian.org/data/main/b/brian/2.5.1-3/debian/patches/numpy1.24.patch
+    ./numpy1.24.patch
+  ];
+
   propagatedBuildInputs = [
     cython
     jinja2
diff --git a/pkgs/development/python-modules/brian2/numpy1.24.patch b/pkgs/development/python-modules/brian2/numpy1.24.patch
new file mode 100644
index 000000000000..01af8f77c0ed
--- /dev/null
+++ b/pkgs/development/python-modules/brian2/numpy1.24.patch
@@ -0,0 +1,18 @@
+Description: Remove deprecated use of np.float
+Author: Marcel Stimberg <marcel.stimberg@inserm.fr>
+Bug-Debian: https://bugs.debian.org/1027193
+Applied-Upstream: 61ef84b316a3d0a892298adf51abd8ac50900758
+Last-Update: 2023-01-06
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- brian.orig/brian2/units/fundamentalunits.py
++++ brian/brian2/units/fundamentalunits.py
+@@ -1597,7 +1597,7 @@
+         unitless = np.array(self / best_unit, copy=False)
+         threshold = np.get_printoptions()['threshold'] // 100
+         if unitless.ndim == 0:
+-            sympy_quantity = np.float(unitless)
++            sympy_quantity = float(unitless)
+         elif unitless.ndim == 1:
+             array_str = np.array2string(unitless, separator=" & ", threshold=threshold,
+                                         max_line_width=sys.maxsize)