diff --git a/poetry.lock b/poetry.lock
index 084d2ae..2dd15a5 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -292,7 +292,7 @@ description = "Parallel PyData with Task Scheduling"
 name = "dask"
 optional = false
 python-versions = ">=3.6"
-version = "2.19.0"
+version = "2.21.0"
 
 [package.dependencies]
 pyyaml = "*"
@@ -1867,7 +1867,7 @@ version = "2.0.0"
 heapdict = "*"
 
 [metadata]
-content-hash = "05e62e582b1f2ef7598c287ad12278dbb30e2dfd09fa67a826e5bf6b25ce9c24"
+content-hash = "b37e3fdf7cc485ba23e83cc365a03ed263a7801e852a914fafb7d185aff91ed3"
 python-versions = "^3.8"
 
 [metadata.files]
@@ -2022,8 +2022,8 @@ cython = [
     {file = "Cython-0.29.20.tar.gz", hash = "sha256:22d91af5fc2253f717a1b80b8bb45acb655f643611983fd6f782b9423f8171c7"},
 ]
 dask = [
-    {file = "dask-2.19.0-py3-none-any.whl", hash = "sha256:a71db1cef556e9930a8da35f820dc73024102810f5670e1c258c706ff5076edc"},
-    {file = "dask-2.19.0.tar.gz", hash = "sha256:e18035cebc2a32e9d483f76d7718f846e95a0f75e6b0fe192a21328c236a465b"},
+    {file = "dask-2.21.0-py3-none-any.whl", hash = "sha256:9e9397d9ca08fe0540ceb57bbda1fab8dad6f5f4c3e555e33d0d0bdd28d8d8bd"},
+    {file = "dask-2.21.0.tar.gz", hash = "sha256:c188195a7c73e0d27af5308e8ac7d62b6d1e95b670280db2c102d737bf711b55"},
 ]
 dask-labextension = [
     {file = "dask_labextension-2.0.2.tar.gz", hash = "sha256:65119f989923c759f5ca51d1dad896a1ece57ac8fb4aab9229299bae085439c2"},
diff --git a/pyproject.toml b/pyproject.toml
index 1f71bf2..04bb17e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ license = "LGPL-3.0-or-later"
 [tool.poetry.dependencies]
 cartopy = "^0.18.0"
 cython = "^0.29.20"
-dask = "^2.19.0"
+dask = "^2.21.0"
 dask_labextension = "^2.0.2"
 datashader = "^0.11.0"
 distributed = "^2.19.0"