diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..12094e9
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+praw==7.5.0
+requests==2.27.1
diff --git a/save-image.py b/save-image.py
index 2d38e9b..8c4e688 100644
--- a/save-image.py
+++ b/save-image.py
@@ -1,8 +1,12 @@
-import time
-import requests
-import praw
-import os
-import json
+try:
+    import time
+    import requests
+    import praw
+    import os
+    import json
+except ImportError:
+    print("Please install the required python modules with pip install -r requirements.txt or pip3 install -r requirements.txt!")
+    exit()
 current_time = time.strftime("%H-%M-%S")
 current_path = os.path.dirname(os.path.realpath(__file__))
 
@@ -13,6 +17,10 @@ nswf = False
 def debugging_message(message : str):
     print("["+current_time+"][DEBUG] "+message)
 
+if not os.path.isfile(current_path+"/used-posts.json"):
+    with open(current_path+"/used-posts.json", "w") as used_posts_file:
+        json.dump({"ids": []}, used_posts_file)
+
 reddit = praw.Reddit(client_id="TB3qNrAO2cnRkpmI-Vd8hg",
                      client_secret="AO61coSKJ8O8KLlHAqP6W-nvufdgUw",
                      user_agent="Meme of the day"