diff --git a/README.md b/README.md
index ee449b9..0d667cc 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,10 @@ its a script that does everything awesome at all times
 tmux-sessionizer [<partial name of session>]
 ```
 
+### Changing search paths
+```bash
+export TMUX_SESSIONIZER_PATHS="~/projects ~/work"
+```
+
 if you execute tmux-sessionizer without any parameters it will assume FZF and
 try to fuzzy find over a set of directories.
-
-TODO: waiting on that directory list to be dynamic :) (go a head make pr if you want)
diff --git a/tmux-sessionizer b/tmux-sessionizer
index fa1bec5..59917ad 100755
--- a/tmux-sessionizer
+++ b/tmux-sessionizer
@@ -19,12 +19,22 @@ hydrate() {
     fi
 }
 
+expand_paths() {
+    local paths="$1" expanded=""
+    for path in $paths; do
+        # Expand ~ to $HOME before passing to `realpath`.
+        expanded="$expanded $(realpath -m "${path/#\~/$HOME}" 2>/dev/null)"
+    done
+
+    echo "$expanded"
+}
+
 if [[ $# -eq 1 ]]; then
     selected=$1
 else
-    # If someone wants to make this extensible, i'll accept
-    # PR
-    selected=$(find ~/ ~/personal ~/personal/dev/env/.config -mindepth 1 -maxdepth 1 -type d | fzf)
+    # Use TMUX_SESSIONIZER_PATHS if set, otherwise default paths.
+    paths=$(expand_paths "${TMUX_SESSIONIZER_PATHS:-"~/ ~/personal ~/personal/dev/env/.config"}")
+    selected=$(find $paths -mindepth 1 -maxdepth 1 -type d 2>/dev/null | fzf)
 fi
 
 if [[ -z $selected ]]; then