diff --git a/.travis.yml b/.travis.yml
index aa15f7a..668318c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,14 +3,9 @@ matrix:
   include:
     # TODO: temporarily disabled since the newest version of Hackney (used by excoveralls) doesn't seem to work with OTP 20 ("Compiling src/hackney_ssl.erl failed")
     #    - otp_release: 20.0
-    #      elixir: 1.8
-    - otp_release: 21.0
-      elixir: 1.8
-    - otp_release: 22.0
-      elixir: 1.8
-    # TODO: temporarily disabled since the newest version of Hackney (used by excoveralls) doesn't seem to work with OTP 20 ("Compiling src/hackney_ssl.erl failed")
-    #    - otp_release: 20.0
     #      elixir: 1.9
+    - otp_release: 21.0
+      elixir: 1.9
     - otp_release: 22.0
       elixir: 1.9
     - otp_release: 21.0
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d754b4b..066a22c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ This project adheres to [Semantic Versioning](http://semver.org/) and
 
 ## v0.3.0 - 2020-09-21
 
-Elixir versions < 1.8 are no longer supported
+Elixir versions < 1.9 are no longer supported
 
 ### Added
 
diff --git a/mix.exs b/mix.exs
index cb6e912..0be7ec6 100644
--- a/mix.exs
+++ b/mix.exs
@@ -9,7 +9,7 @@ defmodule SPARQL.Client.Mixfile do
     [
       app: :sparql_client,
       version: @version,
-      elixir: "~> 1.8",
+      elixir: "~> 1.9",
       build_embedded: Mix.env() == :prod,
       start_permanent: Mix.env() == :prod,
       deps: deps(),