diff --git a/MANIFEST.in b/MANIFEST.in
index a49ca082..81ddd159 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -6,7 +6,6 @@ exclude CHANGELOG.rst
 exclude Makefile
 exclude requirements.txt
 exclude requirements-dev.txt
-exclude runtests.sh
 exclude setup.cfg
 exclude .gitignore
 exclude .coveragerc
diff --git a/runtests.sh b/runtests.sh
deleted file mode 100755
index da44cd1c..00000000
--- a/runtests.sh
+++ /dev/null
@@ -1,101 +0,0 @@
-#!/bin/bash
-
-# Help text
-usage="
-$(basename "$0") [-hpdnw] [-v VERSION(S)]
-
-Run pytest for emg3d locally in an isolated venv before submitting to GitHub;
-by default for all supported python versions of emg3d.
-
-where:
-    -h : Show this help text.
-    -v : Python 3.x version, e.g. '-v 7' for Python 3.7. Default: '7 8'.
-    -p : Print output of conda.
-    -d : Delete environments after tests.
-    -n : Run tests without soft dependencies.
-    -w : Disable pytest warnings.
-
-"
-
-# Set default values
-PYTHON3VERSION="7 8"
-PRINT="/dev/null"
-PCKGS="scipy numba pytest pytest-cov pytest-flake8 pytest-console-scripts"
-SOFT="xarray empymod h5py scooby discretize matplotlib"
-PROPS="--flake8"
-WARN=""
-SD="_soft"
-
-# Get Optional Input
-while getopts "hv:pdnw" opt; do
-
-  case $opt in
-    h) echo "$usage"
-       exit
-       ;;
-    v) PYTHON3VERSION=$OPTARG
-       ;;
-    p) PRINT="/dev/tty"
-       ;;
-    d) DELETE=true
-       ;;
-    n) SOFT=""
-       SD="_no-soft"
-       ;;
-    w) WARN="--disable-warnings"
-       ;;
-    :) printf "missing argument for -%s\n" "$OPTARG" >&2
-       echo "$usage" >&2
-       exit 1
-       ;;
-   \?) printf "illegal option: -%s\n" "$OPTARG" >&2
-       echo "$usage" >&2
-       exit 1
-       ;;
-  esac
-done
-
-
-# Loop over Python versions
-for i in ${PYTHON3VERSION[@]}; do
-
-  # Environment name
-  NAME=test_emg3d_3${i}${SD}
-
-  # Print info
-  STR="  PYTHON 3."${i}${SD}"  "
-  LENGTH=$(( ($(tput cols) - ${#STR}) / 2 - 2 ))
-  printf "\n  "
-  printf '\e[1m\e[34m%*s' "${LENGTH}" '' | tr ' ' -
-  if [ $((${#STR}%2)) -ne 0 ];
-  then
-      printf "-"
-  fi
-  printf "${STR}"
-  printf '%*s\n' "${LENGTH}" '' | tr ' ' -
-  printf "\e[0m\n"
-
-  # Create virtual environment
-  if [ ! -d "$HOME/anaconda3/envs/$NAME" ]; then
-    conda create -y -c conda-forge -n $NAME python=3.${i} $PCKGS $SOFT &> $PRINT
-  fi
-
-  # Activate virtual environment
-  source activate $NAME
-
-  # Install emg3d
-  python setup.py install &> $PRINT
-
-  # Run tests
-  pytest --cov=emg3d $PROPS $WARN
-  coverage html
-
-  # De-activate venv
-  conda deactivate
-
-  # Remove venv
-  if [ "$DELETE" = true ] ; then
-    conda remove -y -n $NAME --all &> $PRINT
-  fi
-
-done
diff --git a/setup.py b/setup.py
index 11e88a13..c63dcc5c 100644
--- a/setup.py
+++ b/setup.py
@@ -27,6 +27,7 @@
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
     ],
     entry_points={
         "console_scripts": [