diff --git a/Changelog.md b/Changelog.md
index 951b507..2e273e9 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - App management file for [shfmt](https://github.com/mvdan/sh)
 - When installing shellcheck, the corresponding man page is installed if pandoc is available.
 ### Changed
+- Specifying a version for installing or upgrading pip is possible.
 ### Deprecated
 ### Removed
 ### Fixed
diff --git a/lib/sdd/apps/user/pip b/lib/sdd/apps/user/pip
index 64b28b3..14fe096 100755
--- a/lib/sdd/apps/user/pip
+++ b/lib/sdd/apps/user/pip
@@ -1,17 +1,26 @@
 #! /bin/bash
 
 sdd_install() {
-    command -v python3 || return 1
+    command -v python3 >/dev/null 2>&1 || return 1
 
-    cd /tmp || return 1
-    wget https://bootstrap.pypa.io/get-pip.py
+    wget -P /tmp https://bootstrap.pypa.io/get-pip.py
+    python3 /tmp/get-pip.py --user
+    sdd_upgrade "$1"
 
-    python3 get-pip.py --user
-    rm get-pip.py
+    mkdir -p "$SDD_INSTALL_PREFIX"/share/{bash_completion,zsh/site-functions}
+    ~/.local/bin/pip completion --bash > "$SDD_INSTALL_PREFIX"/share/bash_completion/pip
+    ~/.local/bin/pip completion --zsh > "$SDD_INSTALL_PREFIX"/share/zsh/site-functions/_pip
+
+    rm /tmp/get-pip.py
+}
+
+sdd_upgrade() {
+    ~/.local/bin/pip install --user --upgrade pip=="$1"
 }
 
 sdd_uninstall() {
-    "$SDD_INSTALL_PREFIX"/bin/pip uninstall --yes pip
+    ~/.local/bin/pip uninstall --yes pip
+    rm -rvf ~/.local/share/{bash_completion/pip,zsh/site-functions/_pip}
 }
 
 sdd_fetch_latest_version() {
diff --git a/test/apps/pip.bats b/test/apps/pip.bats
index 45ac750..5d503e2 100644
--- a/test/apps/pip.bats
+++ b/test/apps/pip.bats
@@ -1,12 +1,16 @@
-@test "pip of recent version can be installed and uninstalled" {
-  run sdd install pip
+@test "pip of recent version can be installed, upgraded and uninstalled" {
+  run sdd install pip=19.0
   [ $status -eq 0 ]
-  [[ "${lines[0]}" = 'Latest version available: '* ]]
+  [ "${lines[0]}" = 'Specified version: 19.0' ]
   [ "${lines[-1]}" = 'Succeeded to install "pip".' ]
 
   run pip --version
   [ $status -eq 0 ]
 
+  run sdd upgrade pip=20.0.1
+  [ $status -eq 0 ]
+  [ "${lines[-1]}" = 'Succeeded to upgrade "pip".' ]
+
   run sdd uninstall pip
   [ $status -eq 0 ]
   [ "${lines[-1]}" = 'Succeeded to uninstall "pip".' ]