diff --git a/CHANGELOG.md b/CHANGELOG.md
index d216607..230381c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 - installing plugins installs just new plugins. Already installed plugins aren't
   updated.
 - add 'update plugin' binding and functionality
+- add test for updating a plugin
 
 ### v0.0.2, 2014-07-17
 - run all *.tmux plugin files as executables
diff --git a/tests/expect_successful_update_of_a_single_plugin b/tests/expect_successful_update_of_a_single_plugin
new file mode 100755
index 0000000..cfff332
--- /dev/null
+++ b/tests/expect_successful_update_of_a_single_plugin
@@ -0,0 +1,61 @@
+#!/usr/bin/env expect
+
+# disables script output
+log_user 0
+
+spawn tmux
+
+# Waiting for tmux to attach. If this is not done, next command, `send` will
+# not work properly.
+sleep 1
+
+# this is tmux prefix + U
+send "U"
+
+set timeout 5
+
+expect {
+  "Installed plugins" {
+
+    expect {
+      "\"tmux-example-plugin\"" {
+
+        expect {
+          "\"all\" - updates all plugins" {
+
+            expect { "ENTER - cancels" }
+
+          }
+        }
+
+      }
+    }
+
+  }
+
+  timeout {
+    puts "Plugin update prompt timeout";
+    exit 1
+  }
+}
+
+send "tmux-example-plugin\r"
+
+expect {
+  "Updating \"tmux-example-plugin\"" {
+
+    expect {
+      "\"tmux-example-plugin\" update success" {
+
+        expect { "Done, press ENTER to continue." { exit 0 } }
+
+      }
+    }
+
+  }
+
+  timeout {
+    puts "Update all plugins timeout";
+    exit 1
+  }
+}
diff --git a/tests/expect_successful_update_of_all_plugins b/tests/expect_successful_update_of_all_plugins
new file mode 100755
index 0000000..4705edd
--- /dev/null
+++ b/tests/expect_successful_update_of_all_plugins
@@ -0,0 +1,67 @@
+#!/usr/bin/env expect
+
+# disables script output
+log_user 0
+
+spawn tmux
+
+# Waiting for tmux to attach. If this is not done, next command, `send` will
+# not work properly.
+sleep 1
+
+# this is tmux prefix + U
+send "U"
+
+set timeout 5
+
+expect {
+  "Installed plugins" {
+
+    expect {
+      "\"tmux-example-plugin\"" {
+
+        expect {
+          "\"all\" - updates all plugins" {
+
+            expect { "ENTER - cancels" }
+
+          }
+        }
+
+      }
+    }
+
+  }
+
+  timeout {
+    puts "Plugin update prompt timeout";
+    exit 1
+  }
+}
+
+send "all\r"
+
+expect {
+  "Updating all plugins!" {
+
+    expect {
+      "Updating \"tmux-example-plugin\"" {
+
+        expect {
+          "\"tmux-example-plugin\" update success" {
+
+            expect { "Done, press ENTER to continue." { exit 0 } }
+
+          }
+        }
+
+      }
+    }
+
+  }
+
+  timeout {
+    puts "Update all plugins timeout";
+    exit 1
+  }
+}
diff --git a/tests/test_plugin_update.sh b/tests/test_plugin_update.sh
new file mode 100755
index 0000000..c6eba96
--- /dev/null
+++ b/tests/test_plugin_update.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+source $CURRENT_DIR/helpers.sh
+
+manually_install_the_plugin() {
+	mkdir -p ~/.tmux/plugins/
+	cd ~/.tmux/plugins/
+	git clone --quiet https://github.com/tmux-plugins/tmux-example-plugin
+}
+
+test_plugin_installation() {
+	set_tmux_conf_helper <<- HERE
+	set -g @tpm_plugins "tmux-plugins/tmux-example-plugin"
+	run-shell "~/tpm/tpm"
+	HERE
+
+	manually_install_the_plugin
+
+	# opens tmux and test it with `expect`
+	$CURRENT_DIR/expect_successful_update_of_all_plugins ||
+		fail_helper "Tmux 'update all plugins' fails"
+
+	$CURRENT_DIR/expect_successful_update_of_a_single_plugin ||
+		fail_helper "Tmux 'update single plugin' fails"
+
+	teardown_helper
+}
+
+main() {
+	test_plugin_installation
+	exit_value_helper
+}
+main