Updating requirements to get latest applicable library.

requirements.txt

@@ -2,38 +2,38 @@ alembic==1.*
 argcomplete==1.10.0
 backports-datetime-fromisoformat==1.0.0
 beautifulsoup4==4.8.0
-certifi>=2018.11.29
-chardet>=2.3.0
+certifi~=2018.11.29
+chardet==3.*
 dill==0.2.9
-docx2txt>=0.6
-EbookLib>=0.15
+docx2txt~=0.6
+EbookLib~=0.15
 idna==2.8
 imbalanced-learn==0.3.3
-lxml>=4.6.3
+lxml~=4.6.3
 # https://github.com/mattgwwalker/msg-extractor/zipball/master
 extract-msg==0.23.1
-nltk>=3.4.5
+nltk~=3.4.5
 numpy==1.16.2
-pdfminer.six==20181108 #<-- go back to this after the shebang fix is released (see https://github.com/goulu/pdfminer/issues/27)
+pdfminer.six==20191110 #<-- go back to this after the shebang fix is released (see https://github.com/goulu/pdfminer/issues/27)
 # #https://github.com/goulu/pdfminer/zipball/e6ad15af79a26c31f4e384d8427b375c93b03533#egg=pdfminer.six
-Pillow>=8.1.2
+Pillow~=8.1.2
 #pocketsphinx==0.1.3
 psycopg2==2.7.5
-python-pptx>=0.6.5
+python-pptx~=0.6.5
 python-json-logger
 requests==2.21.0
 scikit-learn==0.19.1
 scipy==1.2.1
 singledispatch==3.4.0.3
 six==1.12.0
 soupsieve==1.7.3
-SpeechRecognition>=3.8.1
+SpeechRecognition~=3.8.1
 SQLAlchemy==1.3.3
 SQLAlchemy-Utils==0.33.11
-textract>=1.6.3
+textract~=1.6.3
 urllib3
-wget>=3.2
-xlrd>=1.2.0
+wget~=3.2
+xlrd~=1.2.0
 XlsxWriter==1.1.2
 pandas
 selenium