diff --git a/mkv_this/functions.py b/mkv_this/functions.py
index c037c0e..853485f 100644
--- a/mkv_this/functions.py
+++ b/mkv_this/functions.py
@@ -5,11 +5,6 @@ import markovify
 import sys
 import html2text
 
-from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
-from pdfminer.converter import TextConverter
-from pdfminer.layout import LAParams
-from pdfminer.pdfpage import PDFPage
-from io import StringIO
 
 fnf = ": error: file not found. please provide a path to a really-existing file!"
 
@@ -144,6 +139,17 @@ def dir_cat(matchlist, bulkfile):
 
 # extract full text from a pdf:
 def convert_pdf(path):
+    try:
+        from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
+        from pdfminer.converter import TextConverter
+        from pdfminer.layout import LAParams
+        from pdfminer.pdfpage import PDFPage
+        from io import StringIO
+    except ModuleNotFoundError as exc:
+        print(
+            f": there was trouble: {exc}.\n: install 'pdfminer.six' with pip to convert a pdf."
+        )
+        sys.exit()
     print(": converting pdf file...")
     try:
         rsrcmgr = PDFResourceManager()
diff --git a/setup.py b/setup.py
index fe1ec75..613a971 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@ with open(path.join(this_directory, "README.md"), encoding="utf-8") as f:
 
 setup(
     name="mkv-this",
-    version="0.2.4",
+    version="0.2.5",
     description="cli wrapper for markovify: take a text file, directory, pdf or url, markovify, save the results.",
     long_description=long_description,
     long_description_content_type="text/markdown",
@@ -24,6 +24,6 @@ setup(
             "mkv-this-dir = mkv_this.mkv_this_dir:main",
         ]
     },
-    install_requires=["markovify", "argparse", "html2text", "requests", "pdfminer.six",],
+    install_requires=["markovify", "argparse", "html2text", "requests",],
     zip_safe=False,
 )