diff --git a/var/spack/repos/builtin/packages/lammps/package.py b/var/spack/repos/builtin/packages/lammps/package.py
index c3033e58b82..006665fc03a 100644
--- a/var/spack/repos/builtin/packages/lammps/package.py
+++ b/var/spack/repos/builtin/packages/lammps/package.py
@@ -30,12 +30,18 @@ class Lammps(CMakePackage, CudaPackage, ROCmPackage, PythonExtension):
     #   marked deprecated=True
     # * patch releases older than a stable release should be marked deprecated=True
     version("develop", branch="develop")
+    version("20250402", sha256="5087ebd6b00cd44a7d73303d49685668f6effa76dc375912f7f75db558b39bca")
     version("20250204", sha256="a4cb0a58451d47ac31ee3e1f148d92f445298d6e27f2d06f161b9b4168d79eb1")
     version("20241119", sha256="7d1a825f13eef06d82ed8ae950f4a5ca6da9f6a5979745a85a7a58781e4c6ffa")
+    version(
+        "20240829.2",
+        sha256="f8ca3f021a819ced8658055f7750e235c51b4937ddb621cf1bd7bee08e0b6266",
+        preferred=True,
+    )
     version(
         "20240829.1",
         sha256="3aea41869aa2fb8120fc4814cab645686f969e2eb7c66aa5587e500597d482dc",
-        preferred=True,
+        deprecated=True,
     )
     version(
         "20240829",
@@ -421,6 +427,7 @@ class Lammps(CMakePackage, CudaPackage, ROCmPackage, PythonExtension):
         depends_on("fortran", type="build", when=f"+{fc_pkg}")
 
     stable_versions = {
+        "20240829.2",
         "20240829.1",
         "20240829",
         "20230802.4",
@@ -707,6 +714,7 @@ def url_for_version(self, version):
     depends_on("blas", when="+latte")
     depends_on("lapack", when="+latte")
     depends_on("python", when="+python")
+    depends_on("python@3.6:", when="@20250402: +python")
     depends_on("mpi", when="+user-lb")
     depends_on("mpi", when="+latboltz")
     depends_on("mpi", when="+user-h5md")
@@ -726,6 +734,7 @@ def url_for_version(self, version):
     depends_on("kokkos@4.3.01:", when="@20240627: +kokkos")
     depends_on("kokkos@4.4.01:", when="@20241119: +kokkos")
     depends_on("kokkos@4.5.01:", when="@20250204: +kokkos")
+    depends_on("kokkos@4.6.00:", when="@20250402: +kokkos")
     depends_on("adios2", when="+user-adios")
     depends_on("adios2", when="+adios")
     depends_on("plumed", when="+user-plumed")
@@ -769,6 +778,11 @@ def url_for_version(self, version):
 
     extends("python", when="+python")
 
+    conflicts(
+        "lammps_sizes=smallsmall",
+        when="@20250402:",
+        msg="smallsmall support has been removed in version 20250402",
+    )
     conflicts("+cuda", when="+opencl")
     conflicts("+rocm", when="+opencl")
     conflicts("+body", when="+poems@:20180628")