diff --git a/pyproject.toml b/pyproject.toml
index f974cd9..93aaca3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "rwa"
-version = "0.9.2"
+version = "0.9.3"
 description = "HDF5-based serialization library for Python datatypes"
 authors = ["François Laurent <francois.laurent@pasteur.fr>"]
 license = "Apache 2.0"
@@ -9,10 +9,10 @@ readme = "README.md"
 [tool.poetry.dependencies]
 python = ">=3.8,<3.12"
 six = "^1.16.0"
-numpy = "^1.24.3"
-scipy = "^1.10.1"
-pandas = "^2.0.2"
-h5py = "^3.8.0"
+numpy = ">=0"
+scipy = ">=0"
+pandas = ">=0"
+h5py = "^3"
 
 
 [tool.poetry.group.dev.dependencies]
diff --git a/rwa/pandas.py b/rwa/pandas.py
index 8aeea80..6ba0d03 100644
--- a/rwa/pandas.py
+++ b/rwa/pandas.py
@@ -4,6 +4,7 @@
 from .generic import *
 import warnings
 import sys
+import numpy as np
 
 class Python35Warning(DeprecationWarning):
     pass
@@ -163,7 +164,7 @@ class pandas_Int64Index(object):
             """
             __slot__ = ()
             pass
-        peek_int64index = peek_numerical_index(pandas.Index, lambda a: a.astype(np.int64))
+        peek_int64index = peek_numerical_index(pandas.Index, lambda a: np.asarray(a).astype(np.int64))
 
     try:
         # UInt64Index is missing in 0.17.1
@@ -191,7 +192,7 @@ class pandas_Float64Index(object):
             """
             __slot__ = ()
             pass
-        peek_float64index = peek_numerical_index(pandas.Index, lambda a: a.astype(np.float64))
+        peek_float64index = peek_numerical_index(pandas.Index, lambda a: np.asarray(a).astype(np.float64))
 
     if True:
         poke_rangeindex = poke([('start','_start'), ('stop','_stop'), ('step','_step'), 'name'])
@@ -224,7 +225,7 @@ class pandas_RangeIndex(object):
             pass
         def peek_rangeindex(*args, **kwargs):
             attrs = peek_as_dict(*args, **kwargs)
-            return pandas.Int64Index( \
+            return pandas.Index( \
                 range( \
                     attrs.pop('_start', None), \
                     attrs.pop('_stop', None), \
diff --git a/setup.py b/setup.py
index e8adb8b..722b44d 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 
 setup(
     name = 'rwa-python',
-    version = '0.9.2',
+    version = '0.9.3',
     description = 'HDF5-based serialization library for Python datatypes',
     long_description = long_description,
     url = 'https://github.com/DecBayComp/RWA-python',