diff --git a/poetry.lock b/poetry.lock
index 29b383e..41588e1 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -167,15 +167,20 @@ optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
+fsspec = {version = ">=0.6.0", optional = true, markers = "extra == \"dataframe\""}
+numpy = {version = ">=1.13.0", optional = true, markers = "extra == \"dataframe\""}
+pandas = {version = ">=0.23.0", optional = true, markers = "extra == \"dataframe\""}
+partd = {version = ">=0.3.10", optional = true, markers = "extra == \"dataframe\""}
 pyyaml = "*"
+toolz = {version = ">=0.8.2", optional = true, markers = "extra == \"dataframe\""}
 
 [package.extras]
 array = ["numpy (>=1.13.0)", "toolz (>=0.8.2)"]
 bag = ["cloudpickle (>=0.2.2)", "fsspec (>=0.6.0)", "toolz (>=0.8.2)", "partd (>=0.3.10)"]
-complete = ["bokeh (>=1.0.0,<2.0.0 || >2.0.0)", "cloudpickle (>=0.2.2)", "distributed (>=2.0)", "fsspec (>=0.6.0)", "numpy (>=1.13.0)", "pandas (>=0.23.0)", "partd (>=0.3.10)", "toolz (>=0.8.2)"]
+complete = ["bokeh (>=1.0.0,!=2.0.0)", "cloudpickle (>=0.2.2)", "distributed (>=2.0)", "fsspec (>=0.6.0)", "numpy (>=1.13.0)", "pandas (>=0.23.0)", "partd (>=0.3.10)", "toolz (>=0.8.2)"]
 dataframe = ["numpy (>=1.13.0)", "pandas (>=0.23.0)", "toolz (>=0.8.2)", "partd (>=0.3.10)", "fsspec (>=0.6.0)"]
 delayed = ["cloudpickle (>=0.2.2)", "toolz (>=0.8.2)"]
-diagnostics = ["bokeh (>=1.0.0,<2.0.0 || >2.0.0)"]
+diagnostics = ["bokeh (>=1.0.0,!=2.0.0)"]
 distributed = ["distributed (>=2.0)"]
 
 [[package]]
@@ -223,6 +228,30 @@ category = "main"
 optional = false
 python-versions = ">=2.7"
 
+[[package]]
+name = "fsspec"
+version = "0.8.4"
+description = "File-system specification"
+category = "main"
+optional = false
+python-versions = ">3.6"
+
+[package.extras]
+abfs = ["adlfs"]
+adl = ["adlfs"]
+dask = ["dask", "distributed"]
+dropbox = ["dropboxdrivefs", "requests", "dropbox"]
+gcs = ["gcsfs"]
+git = ["pygit2"]
+github = ["requests"]
+gs = ["gcsfs"]
+hdfs = ["pyarrow"]
+http = ["requests", "aiohttp"]
+s3 = ["s3fs"]
+sftp = ["paramiko"]
+smb = ["smbprotocol"]
+ssh = ["paramiko"]
+
 [[package]]
 name = "heapdict"
 version = "1.0.1"
@@ -339,7 +368,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 parso = ">=0.7.0,<0.8.0"
 
 [package.extras]
-qa = ["flake8 (3.7.9)"]
+qa = ["flake8 (==3.7.9)"]
 testing = ["Django (<3.1)", "colorama", "docopt", "pytest (>=3.9.0,<5.0.0)"]
 
 [[package]]
@@ -472,6 +501,14 @@ category = "main"
 optional = false
 python-versions = ">=3.6"
 
+[[package]]
+name = "locket"
+version = "0.2.0"
+description = "File-based locks for Python for Linux and Windows"
+category = "main"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "markupsafe"
 version = "1.1.1"
@@ -565,11 +602,11 @@ testpath = "*"
 traitlets = ">=4.2"
 
 [package.extras]
-all = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (0.2.2)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
+all = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (==0.2.2)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
 docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
 serve = ["tornado (>=4.0)"]
-test = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (0.2.2)"]
-webpdf = ["pyppeteer (0.2.2)"]
+test = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (==0.2.2)"]
+webpdf = ["pyppeteer (==0.2.2)"]
 
 [[package]]
 name = "nbformat"
@@ -659,7 +696,7 @@ six = "*"
 
 [[package]]
 name = "pandas"
-version = "1.1.3"
+version = "1.1.5"
 description = "Powerful data structures for data analysis, time series, and statistics"
 category = "main"
 optional = false
@@ -692,6 +729,21 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 [package.extras]
 testing = ["docopt", "pytest (>=3.0.7)"]
 
+[[package]]
+name = "partd"
+version = "1.1.0"
+description = "Appendable key-value storage"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+locket = "*"
+toolz = "*"
+
+[package.extras]
+complete = ["numpy (>=1.9.0)", "pandas (>=0.19.0)", "pyzmq", "blosc"]
+
 [[package]]
 name = "pathspec"
 version = "0.8.0"
@@ -929,7 +981,7 @@ urllib3 = ">=1.21.1,<1.25.0 || >1.25.0,<1.25.1 || >1.25.1,<1.26"
 
 [package.extras]
 security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)"]
-socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7)", "win-inet-pton"]
+socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
 name = "retrying"
@@ -1167,7 +1219,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
 secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
-socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
+socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
 name = "wcwidth"
@@ -1210,7 +1262,7 @@ heapdict = "*"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "f74324027ce3a8293f923f32f44af528a5866797c7bf62a901c985d319ccec65"
+content-hash = "d422e0633b25a0201baeae51acf125ad046465d25ee8812013aae6ba208edea7"
 
 [metadata.files]
 appdirs = [
@@ -1238,6 +1290,8 @@ argon2-cffi = [
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     {file = "argon2_cffi-20.1.0-cp38-cp38-win32.whl", hash = "sha256:77e909cc756ef81d6abb60524d259d959bab384832f0c651ed7dcb6e5ccdbb78"},
     {file = "argon2_cffi-20.1.0-cp38-cp38-win_amd64.whl", hash = "sha256:9dfd5197852530294ecb5795c97a823839258dfd5eb9420233c7cfedec2058f2"},
+    {file = "argon2_cffi-20.1.0-cp39-cp39-win32.whl", hash = "sha256:e2db6e85c057c16d0bd3b4d2b04f270a7467c147381e8fd73cbbe5bc719832be"},
+    {file = "argon2_cffi-20.1.0-cp39-cp39-win_amd64.whl", hash = "sha256:8a84934bd818e14a17943de8099d41160da4a336bcc699bb4c394bbb9b94bd32"},
 ]
 async-generator = [
     {file = "async_generator-1.10-py3-none-any.whl", hash = "sha256:01c7bf666359b4967d2cda0000cc2e4af16a0ae098cbffcb8472fb9e8ad6585b"},
@@ -1340,6 +1394,10 @@ entrypoints = [
     {file = "entrypoints-0.3-py2.py3-none-any.whl", hash = "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19"},
     {file = "entrypoints-0.3.tar.gz", hash = "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"},
 ]
+fsspec = [
+    {file = "fsspec-0.8.4-py3-none-any.whl", hash = "sha256:404194b0cf93128d980689fe9a49013ee9676edd1ab7f0f15b737b2cedb0ab88"},
+    {file = "fsspec-0.8.4.tar.gz", hash = "sha256:e1e494d4814f6804769f3c7bfd7a722a15113cc0339d14755297f09306b8f21f"},
+]
 heapdict = [
     {file = "HeapDict-1.0.1-py3-none-any.whl", hash = "sha256:6065f90933ab1bb7e50db403b90cab653c853690c5992e69294c2de2b253fc92"},
     {file = "HeapDict-1.0.1.tar.gz", hash = "sha256:8495f57b3e03d8e46d5f1b2cc62ca881aca392fd5cc048dc0aa2e1a6d23ecdb6"},
@@ -1410,29 +1468,20 @@ kiwisolver = [
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     {file = "kiwisolver-1.3.0-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:baea709cd4b2547294c5dd541099811bbf949def9bef25ed086d3084b0d48849"},
-    {file = "kiwisolver-1.3.0-cp36-cp36m-win32.whl", hash = "sha256:55ab9218cb1038ee7a74e9fcd653bd3687d017b8ff5f607f0d94caf6e130da7b"},
-    {file = "kiwisolver-1.3.0-cp36-cp36m-win_amd64.whl", hash = "sha256:75d21b446bbdfc7a4206117d0fcf423cfb3f6c5cc594caa984530499d5e097d6"},
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 ]
 llvmlite = [
@@ -1453,6 +1502,9 @@ llvmlite = [
     {file = "llvmlite-0.34.0-cp38-cp38-win_amd64.whl", hash = "sha256:964f8f7a2184963cb3617d057c2382575953e488b7bb061b632ee014cfef110a"},
     {file = "llvmlite-0.34.0.tar.gz", hash = "sha256:f03ee0d19bca8f2fe922bb424a909d05c28411983b0c2bc58b020032a0d11f63"},
 ]
+locket = [
+    {file = "locket-0.2.0.tar.gz", hash = "sha256:1fee63c1153db602b50154684f5725564e63a0f6d09366a1cb13dffcec179fb4"},
+]
 markupsafe = [
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@@ -1607,25 +1659,30 @@ packaging = [
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 ]
 pandas = [
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 ]
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@@ -1634,6 +1691,10 @@ parso = [
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     {file = "parso-0.7.1.tar.gz", hash = "sha256:caba44724b994a8a5e086460bb212abc5a8bc46951bf4a9a1210745953622eb9"},
 ]
+partd = [
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+]
 pathspec = [
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@@ -1769,6 +1830,8 @@ pyyaml = [
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     {file = "PyYAML-5.3.1-cp38-cp38-win_amd64.whl", hash = "sha256:95f71d2af0ff4227885f7a6605c37fd53d3a106fcab511b8860ecca9fcf400ee"},
+    {file = "PyYAML-5.3.1-cp39-cp39-win32.whl", hash = "sha256:ad9c67312c84def58f3c04504727ca879cb0013b2517c85a9a253f0cb6380c0a"},
+    {file = "PyYAML-5.3.1-cp39-cp39-win_amd64.whl", hash = "sha256:6034f55dab5fea9e53f436aa68fa3ace2634918e8b5994d82f3621c04ff5ed2e"},
     {file = "PyYAML-5.3.1.tar.gz", hash = "sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"},
 ]
 pyzmq = [
@@ -1973,19 +2036,28 @@ typed-ast = [
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+    {file = "typed_ast-1.4.1-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:fcf135e17cc74dbfbc05894ebca928ffeb23d9790b3167a674921db19082401f"},
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+    {file = "typed_ast-1.4.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:0d8110d78a5736e16e26213114a38ca35cb15b6515d535413b090bd50951556d"},
+    {file = "typed_ast-1.4.1-cp39-cp39-win32.whl", hash = "sha256:b52ccf7cfe4ce2a1064b18594381bccf4179c2ecf7f513134ec2f993dd4ab395"},
+    {file = "typed_ast-1.4.1-cp39-cp39-win_amd64.whl", hash = "sha256:3742b32cf1c6ef124d57f95be609c473d7ec4c14d0090e5a5e05a15269fb4d0c"},
     {file = "typed_ast-1.4.1.tar.gz", hash = "sha256:8c8aaad94455178e3187ab22c8b01a3837f8ee50e09cf31f1ba129eb293ec30b"},
 ]
 typing-extensions = [
diff --git a/pyproject.toml b/pyproject.toml
index ffe3219..7d6395a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = "^3.8"
-pandas = "^1.1.3"
+pandas = "^1.1.5"
 scipy = "^1.5.3"
 umap-learn = "^0.4.6"
 numpy = "^1.19.2"