diff --git a/src/Makefile b/src/Makefile
index 2540d34..d180b18 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -280,7 +280,7 @@ pypkg: python/dist/$(PYTHON_PKG_NAME)-$(VERSION).tar.gz
 
 
 required_python_packages:
-	@$(PIP) install numpy matplotlib click-man
+	@$(PIP) install -r python/pip.freeze
 
 
 python/VERSION:
diff --git a/src/python/msspec_dfm/version.py b/src/python/msspec_dfm/version.py
index b6899cf..af1079a 100644
--- a/src/python/msspec_dfm/version.py
+++ b/src/python/msspec_dfm/version.py
@@ -33,7 +33,7 @@ from pkg_resources import parse_version
 
 try:
     from setuptools_scm import get_version
-    v = get_version(root='../../', relative_to=__file__, version_scheme="post-release")
+    v = get_version(root='../../../', relative_to=__file__, version_scheme="post-release")
     v = parse_version(v)
     if v._version.post[-1] == 0:
         __version__ = v.base_version
diff --git a/src/python/pip.freeze b/src/python/pip.freeze
index e7e4b4a..f008ef2 100644
--- a/src/python/pip.freeze
+++ b/src/python/pip.freeze
@@ -1,3 +1,5 @@
+setuptools_scm
 matplotlib
+numpy
 click
 click-man