diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b214f5e8..757d2728 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -38,7 +38,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8]
 
     steps:
     - uses: actions/checkout@v2
@@ -64,7 +64,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt
-        cat requirements-dev.txt | xargs -n 1 pip install
+        pip install -r requirements-dev.txt
 
     - name: Run tests
       run: |
diff --git a/.travis.yml b/.travis.yml
index d2a96f3f..8ff863a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,6 @@ python:
     - "2.7"
     - "3.1"
     - "3.4"
-    - "3.5"
     - "3.6"
 install:
     - pip install .
diff --git a/README.md b/README.md
index 63358efe..3566f8dd 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,9 @@ Plumb a PDF for detailed information about each text character, rectangle, and l
 
 Works best on machine-generated, rather than scanned, PDFs. Built on [`pdfminer.six`](https://github.com/goulu/pdfminer). 
 
-Currently [tested](tests/) on [Python 3.5, 3.6, 3.7, and 3.8](tox.ini).
+Currently [tested](tests/) on [Python 3.6, 3.7, and 3.8](tox.ini).
+
+**Note:** pdfplumber v0.5.22 is the last version to support Python 3.5.
 
 ## Table of Contents
 
diff --git a/setup.py b/setup.py
index a6f80e2a..ab67ed49 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,6 @@
         "Intended Audience :: Developers",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",