diff --git a/mgeconvert/version.py b/mgeconvert/version.py
index 9d1d1ea..a47ad17 100644
--- a/mgeconvert/version.py
+++ b/mgeconvert/version.py
@@ -5,7 +5,7 @@
 # Unless required by applicable law or agreed to in writing,
 # software distributed under the License is distributed on an
 # "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-__version__ = "1.0.0"
+__version__ = "1.0.1"
 
 # required megengine version range
 MEGENGINE_LOWER = "1.0.0"
diff --git a/setup.py b/setup.py
index fa42781..7f866e3 100644
--- a/setup.py
+++ b/setup.py
@@ -15,8 +15,11 @@
 
 targets = []
 tfversion = None
-IS_VENV = hasattr(sys, "real_prefix") or (
-    hasattr(sys, "base_prefix") and sys.base_prefix != sys.prefix
+IS_VENV = (
+    hasattr(sys, "real_prefix")
+    or (hasattr(sys, "base_prefix") and sys.base_prefix != sys.prefix)
+    or os.path.exists(os.path.join(sys.prefix, "conda-meta"))
+    or (("Continuum Analytics" in sys.version) or ("Anaconda" in sys.version))
 )