diff --git a/dev/python/.config/flake8 b/dev/pyenv/.config/flake8
similarity index 100%
rename from dev/python/.config/flake8
rename to dev/pyenv/.config/flake8
diff --git a/dev/pyenv/aliases.zsh b/dev/pyenv/aliases.zsh
new file mode 100644
index 00000000..f2e007a8
--- /dev/null
+++ b/dev/pyenv/aliases.zsh
@@ -0,0 +1,6 @@
+alias py='python'
+command -v python2 >/dev/null && alias py2='python2'
+command -v python3 >/dev/null && alias py3='python3'
+
+alias pye='pyenv'
+alias ipy='ipython'
diff --git a/dev/python/env.zsh b/dev/pyenv/env.zsh
similarity index 100%
rename from dev/python/env.zsh
rename to dev/pyenv/env.zsh
diff --git a/dev/pyenv/install b/dev/pyenv/install
new file mode 100755
index 00000000..97de08e0
--- /dev/null
+++ b/dev/pyenv/install
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+if [[ -d "$HOME/.pyenv" ]]; then
+    >&2 echo "~/.pyenv already exists, can't install."
+    exit 1
+else
+    git clone https://github.com/yyuu/pyenv.git $HOME/.pyenv
+fi
diff --git a/dev/pyenv/update b/dev/pyenv/update
new file mode 100755
index 00000000..d2cc1384
--- /dev/null
+++ b/dev/pyenv/update
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+if [[ -d $HOME/.pyenv ]]; then
+    cd $HOME/.pyenv && git pull
+    for plugin in $HOME/.pyenv/plugins/*/; do
+        cd "$plugin" && git pull
+    done
+fi
diff --git a/dev/python/aliases.zsh b/dev/python/aliases.zsh
deleted file mode 100644
index 3b27188b..00000000
--- a/dev/python/aliases.zsh
+++ /dev/null
@@ -1,5 +0,0 @@
-alias py='python'
-alias py2='python2'
-alias py3='python3'
-alias pye='pyenv'
-alias ipy='ipython'
diff --git a/dev/python/install b/dev/python/install
deleted file mode 100755
index 8baf78f9..00000000
--- a/dev/python/install
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env bash
-
-if [[ ! -d "$HOME/.pyenv" ]]; then
-    git clone https://github.com/yyuu/pyenv.git $HOME/.pyenv
-fi
diff --git a/dev/ruby/.irbrc b/dev/rbenv/.irbrc
similarity index 100%
rename from dev/ruby/.irbrc
rename to dev/rbenv/.irbrc
diff --git a/dev/ruby/.pryrc b/dev/rbenv/.pryrc
similarity index 100%
rename from dev/ruby/.pryrc
rename to dev/rbenv/.pryrc
diff --git a/dev/ruby/.rspec b/dev/rbenv/.rspec
similarity index 100%
rename from dev/ruby/.rspec
rename to dev/rbenv/.rspec
diff --git a/dev/ruby/aliases.zsh b/dev/rbenv/aliases.zsh
similarity index 100%
rename from dev/ruby/aliases.zsh
rename to dev/rbenv/aliases.zsh
diff --git a/dev/ruby/env.zsh b/dev/rbenv/env.zsh
similarity index 100%
rename from dev/ruby/env.zsh
rename to dev/rbenv/env.zsh
diff --git a/dev/rbenv/install b/dev/rbenv/install
new file mode 100755
index 00000000..ef8a2f02
--- /dev/null
+++ b/dev/rbenv/install
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+if [[ -d "$HOME/.rbenv" ]]; then
+    >&2 echo "~/.rbenv already exists, can't install."
+    exit 1
+else
+    git clone https://github.com/rbenv/rbenv.git $HOME/.rbenv
+    git clone https://github.com/rbenv/ruby-build.git $HOME/.rbenv/plugins/ruby-build
+fi
diff --git a/dev/rbenv/update b/dev/rbenv/update
new file mode 100755
index 00000000..18c6f946
--- /dev/null
+++ b/dev/rbenv/update
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+if [[ -d "$HOME/.rbenv" ]]; then
+    cd $HOME/.rbenv && git pull
+    for plugin in $HOME/.rbenv/plugins/*/; do
+        cd "$plugin" && git pull
+    done
+fi
diff --git a/dev/ruby/install b/dev/ruby/install
deleted file mode 100755
index 3f8472ba..00000000
--- a/dev/ruby/install
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-case "$OSTYPE" in
-    darwin*)
-        brew install rbenv
-        ;;
-    linux*)
-        git clone https://github.com/rbenv/rbenv.git $HOME/.rbenv
-        cd $HOME/.rbenv && src/configure && make -C src
-        git clone https://github.com/rbenv/ruby-build.git $HOME/.rbenv/plugins/ruby-build
-        ;;
-esac