diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d8b5edc012..36574ea87c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,6 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - '7.1'
           - '7.2'
           - '7.3'
           - '7.4'
@@ -50,4 +49,4 @@ jobs:
 
       - name: Static analysis
         run: 'vendor/bin/psalm --config="tests/psalm.xml"'
-        if: ${{ !matrix.future-release && matrix.php-version >= 7.1 }}
+        if: ${{ !matrix.future-release }}
diff --git a/README.md b/README.md
index 3e454c8727..2f02af9cb6 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Installation instructions to use the `composer` command can be found on https://
 
 ### Requirements
 
-PHP Curl Class works with PHP 8.3, 8.2, 8.1, 8.0, 7.4, 7.3, 7.2, and 7.1.
+PHP Curl Class works with PHP 8.3, 8.2, 8.1, 8.0, 7.4, 7.3, and 7.2.
 
 ### Quick Start and Examples
 
diff --git a/composer.json b/composer.json
index ea8d153ac0..09a9008bc8 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         }
     ],
     "require": {
-        "php": ">=7.1",
+        "php": ">=7.2",
         "ext-curl": "*"
     },
     "require-dev": {
diff --git a/tests/check_coding_standards.sh b/tests/check_coding_standards.sh
index d4d0ae7ca3..a217a2582f 100755
--- a/tests/check_coding_standards.sh
+++ b/tests/check_coding_standards.sh
@@ -93,35 +93,29 @@ if [[ ! -z "${elses}" ]]; then
 fi
 
 # Run PHP_CodeSniffer.
-if   [[ "${CI_PHP_VERSION}" == "7.1" ]]; then :
+# Determine which phpcs to use.
+if [[ -f "vendor/bin/phpcs" ]]; then
+    phpcs_to_use="vendor/bin/phpcs"
 else
+    phpcs_to_use="phpcs"
+fi
 
-    # Determine which phpcs to use.
-    if [[ -f "vendor/bin/phpcs" ]]; then
-        phpcs_to_use="vendor/bin/phpcs"
-    else
-        phpcs_to_use="phpcs"
-    fi
-
-    # Detect coding standard violations.
-    "${phpcs_to_use}" --version
-    "${phpcs_to_use}" \
-        --extensions="php" \
-        --ignore="*/vendor/*" \
-        --standard="tests/ruleset.xml" \
-        -p \
-        -s \
-        .
-    if [[ "${?}" -ne 0 ]]; then
-        echo "Error: found PHP_CodeSniffer coding standard violation(s)"
-        errors+=("found PHP_CodeSniffer coding standard violation(s)")
-    fi
-
+# Detect coding standard violations.
+"${phpcs_to_use}" --version
+"${phpcs_to_use}" \
+    --extensions="php" \
+    --ignore="*/vendor/*" \
+    --standard="tests/ruleset.xml" \
+    -p \
+    -s \
+    .
+if [[ "${?}" -ne 0 ]]; then
+    echo "Error: found PHP_CodeSniffer coding standard violation(s)"
+    errors+=("found PHP_CodeSniffer coding standard violation(s)")
 fi
 
 # Run PHP-CS-Fixer.
-if   [[ "${CI_PHP_VERSION}" == "7.1" ]]; then :
-elif [[ "${CI_PHP_VERSION}" == "7.2" ]]; then :
+if   [[ "${CI_PHP_VERSION}" == "7.2" ]]; then :
 elif [[ "${CI_PHP_VERSION}" == "7.3" ]]; then :
 else
     vendor/bin/php-cs-fixer --version
diff --git a/tests/dockerfiles/php71/1_build.sh b/tests/dockerfiles/php71/1_build.sh
deleted file mode 100755
index f61a4bc850..0000000000
--- a/tests/dockerfiles/php71/1_build.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-# Build an image.
-set -x
-docker build --tag="php-curl-class/php71" .
diff --git a/tests/dockerfiles/php71/2_start.sh b/tests/dockerfiles/php71/2_start.sh
deleted file mode 100755
index 8b2ad9fbc2..0000000000
--- a/tests/dockerfiles/php71/2_start.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-# Run image to create container.
-
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-set -x
-cd "${SCRIPT_DIR}/../../.."
-project_dir="${PWD}"
-
-docker start "php71" ||
-    docker run \
-        --detach \
-        --interactive \
-        --mount "type=bind,src=${project_dir},dst=/data,readonly=true" \
-        --name="php71" \
-        --tty \
-        "php-curl-class/php71"
diff --git a/tests/dockerfiles/php71/3_test.sh b/tests/dockerfiles/php71/3_test.sh
deleted file mode 100755
index 181c9206f5..0000000000
--- a/tests/dockerfiles/php71/3_test.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-# Run tests inside container.
-command=$(cat <<-END
-mkdir --parents "/tmp/php-curl-class" &&
-rsync --delete --exclude=".git" --exclude="vendor" --exclude="composer.lock" --links --recursive "/data/" "/tmp/php-curl-class/" &&
-cd "/tmp/php-curl-class" &&
-export CI_PHP_VERSION="7.1" &&
-(
-    [ ! -f "/tmp/.composer_updated" ] &&
-    composer --no-interaction update &&
-    touch "/tmp/.composer_updated" ||
-    exit 0
-) &&
-bash "tests/run.sh"
-END
-)
-set -x
-docker exec --tty "php71" sh -c "${command}"
diff --git a/tests/dockerfiles/php71/4_stop.sh b/tests/dockerfiles/php71/4_stop.sh
deleted file mode 100755
index 8a16db2c80..0000000000
--- a/tests/dockerfiles/php71/4_stop.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-# Stop container.
-set -x
-docker stop "php71"
diff --git a/tests/dockerfiles/php71/Dockerfile b/tests/dockerfiles/php71/Dockerfile
deleted file mode 100644
index 654d6f5601..0000000000
--- a/tests/dockerfiles/php71/Dockerfile
+++ /dev/null
@@ -1,19 +0,0 @@
-FROM php:7.1-cli
-ENV DEBIAN_FRONTEND noninteractive
-
-RUN apt-get --assume-yes --quiet update
-
-RUN apt-get --assume-yes --quiet install git && \
-    apt-get --assume-yes --quiet install libpng-dev && \
-    apt-get --assume-yes --quiet install rsync && \
-    apt-get --assume-yes --quiet install zip
-
-RUN curl --silent --show-error "https://getcomposer.org/installer" | php && \
-    mv "composer.phar" "/usr/local/bin/composer" && \
-    composer global require --no-interaction "phpunit/phpunit"
-
-RUN docker-php-ext-configure gd && \
-    docker-php-ext-install gd
-
-ENV PATH /root/.composer/vendor/bin:$PATH
-CMD ["bash"]
diff --git a/tests/dockerfiles/php71/attach.sh b/tests/dockerfiles/php71/attach.sh
deleted file mode 100755
index 2a3ae0fb3b..0000000000
--- a/tests/dockerfiles/php71/attach.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-# Attach to running container.
-
-docker exec --interactive --tty "php71" bash -l
diff --git a/tests/dockerfiles/php71/run.sh b/tests/dockerfiles/php71/run.sh
deleted file mode 100755
index ced63cf365..0000000000
--- a/tests/dockerfiles/php71/run.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-bash "1_build.sh"
-if [[ $? -ne 0 ]]; then
-    echo "Error: Build failed"
-    exit 1
-fi
-
-bash "2_start.sh"
-if [[ $? -ne 0 ]]; then
-    echo "Error: Start failed"
-    exit 1
-fi
-
-bash "3_test.sh"
-if [[ $? -ne 0 ]]; then
-    echo "Error: Test failed"
-    exit 1
-fi
-
-bash "4_stop.sh"
-if [[ $? -ne 0 ]]; then
-    echo "Error: Stop failed"
-    exit 1
-fi
diff --git a/tests/dockerfiles/php71/run_interactive.sh b/tests/dockerfiles/php71/run_interactive.sh
deleted file mode 100755
index d0ec358b91..0000000000
--- a/tests/dockerfiles/php71/run_interactive.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-# Run image to create container and attach to it.
-
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-set -x
-cd "${SCRIPT_DIR}/../../.."
-project_dir="${PWD}"
-
-docker run \
-    --interactive \
-    --mount "type=bind,src=${project_dir},dst=/data,readonly=true" \
-    --name="php71" \
-    --rm \
-    --tty \
-    "php-curl-class/php71" /bin/bash