diff --git a/.travis.yml b/.travis.yml
index e8384900..7abeecea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,26 +1,20 @@
 language: php
 
 php:
-  - 7.1
   - 7.2
   - 7.3
   - 7.4
 
-env:
-  - DOCTRINE_VERSION=2.6.*
-  - DOCTRINE_VERSION=2.7.*
-
 install:
   - composer self-update
   - composer install
-  - composer require doctrine/orm:${DOCTRINE_VERSION} --dev --prefer-source --update-with-dependencies
 
 notifications:
   email: false
 
 script:
   - make test
-  - if [[ $DOCTRINE_VERSION == 2.7.* && $TRAVIS_PHP_VERSION == 7.4 ]]; then make lint; fi
+  - if [[ $TRAVIS_PHP_VERSION == 7.4 ]]; then make lint; fi
 
 dist: bionic
 
diff --git a/README.md b/README.md
index b307c017..efae22ba 100644
--- a/README.md
+++ b/README.md
@@ -15,12 +15,12 @@ MySQL, Oracle, PostgreSQL and SQLite.
 |:--:|:---------:|
 | MySQL | `ACOS, ADDTIME, AES_DECRYPT, AES_ENCRYPT, ANY_VALUE, ASCII, ASIN, ATAN, ATAN2, BINARY, BIT_COUNT, BIT_XOR, CAST, CEIL, CHAR_LENGTH, COLLATE, CONCAT_WS, CONVERT_TZ, COS, COT, COUNTIF, CRC32, DATE, DATE_FORMAT, DATEADD, DATEDIFF, DATESUB, DAY, DAYNAME, DAYOFWEEK, DAYOFYEAR, DEGREES, DIV, EXP, EXTRACT, FIELD, FIND_IN_SET, FLOOR, FORMAT, FROM_BASE64, FROM_UNIXTIME, GREATEST, GROUP_CONCAT, HEX, HOUR, IFELSE, IFNULL, INET_ATON, INET_NTOA, INET6_ATON, INET6_NTOA, INSTR, IS_IPV4, IS_IPV4_COMPAT, IS_IPV4_MAPPED, IS_IPV6, JSON_CONTAINS, JSON_DEPTH, JSON_LENGTH, LAG, LAST_DAY, LEAD, LEAST, LOG, LOG10, LOG2, LPAD, MAKEDATE, MATCH, MD5, MINUTE, MONTH, MONTHNAME, NOW, NULLIF, OVER, PERIOD_DIFF, PI, POWER, QUARTER, RADIANS, RAND, REGEXP, REPLACE, ROUND, RPAD, SECOND, SECTOTIME, SHA1, SHA2, SIN, SOUNDEX, STD, STDDEV, STRTODATE, STR_TO_DATE, SUBSTRING_INDEX, TAN, TIME, TIMEDIFF, TIMESTAMPADD, TIMESTAMPDIFF, TIMETOSEC, TRUNCATE, UNHEX, UNIX_TIMESTAMP, UTC_TIMESTAMP, UUID_SHORT, VARIANCE, WEEK, WEEKDAY, YEAR, YEARMONTH, YEARWEEK` |
 | Oracle | `CEIL, DAY, FLOOR, HOUR, LISTAGG, MINUTE, MONTH, NVL, SECOND, TO_CHAR, TO_DATE, TRUNC, YEAR` |
-| Sqlite | `CASE WHEN THEN ELSE END, DATE, DATE_FORMAT*, DAY, HOUR, IFNULL, JULIANDAY, MINUTE, MONTH, REPLACE, ROUND, SECOND, STRFTIME, WEEK, WEEKDAY, YEAR` |
+| SQLite | `CASE WHEN THEN ELSE END, DATE, DATE_FORMAT*, DAY, HOUR, IFNULL, JULIANDAY, MINUTE, MONTH, REPLACE, ROUND, SECOND, STRFTIME, WEEK, WEEKDAY, YEAR` |
 | PostgreSQL | `AT_TIME_ZONE, COUNT_FILTER, DATE, DATE_PART, DATE_TRUNC, DAY, EXTRACT, GREATEST, HOUR, LEAST, MINUTE, MONTH, REGEXP_REPLACE, SECOND, STRING_AGG, TO_CHAR, TO_DATE, YEAR` |
 
-> Note: Sqlite date functions are implemented as `strftime(format, value)`.
-  Sqlite only supports the [most common formats](https://www.sqlite.org/lang_datefunc.html),
-  so `date_format` will convert the mysql substitutions to the closest available sqlite substitutions.
+> Note: SQLite date functions are implemented as `strftime(format, value)`.
+  SQLite only supports the [most common formats](https://www.sqlite.org/lang_datefunc.html),
+  so `date_format` will convert the mysql substitutions to the closest available SQLite substitutions.
   This means `date_format(field, '%b %D %Y') -> Jan 1st 2015` becomes `strftime('%m %d %Y', field) -> 01 01 2015`.
 
 Installation
diff --git a/composer.json b/composer.json
index f601bf54..f5f3ccbf 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "beberlei/doctrineextensions",
     "type": "library",
-    "description": "A set of extensions to Doctrine 2 that add support for additional query functions available in MySQL and Oracle.",
+    "description": "A set of extensions to Doctrine 2 that add support for additional query functions available in MySQL, Oracle, PostgreSQL and SQLite.",
     "keywords": ["doctrine", "orm", "database"],
     "license": "BSD-3-Clause",
     "authors": [
@@ -9,14 +9,14 @@
         {"name": "Steve Lacey", "email": "steve@steve.ly"}
     ],
     "require": {
-        "php": "^7.1",
-        "doctrine/orm": "^2.6"
+        "php": "^7.2 || ^8.0",
+        "doctrine/orm": "^2.7"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.14",
         "nesbot/carbon": "*",
-        "phpunit/phpunit": "^7.0 || ^8.0",
-        "symfony/yaml": "^4.2",
+        "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0",
+        "symfony/yaml": "^4.2 || ^5.0",
         "zf1/zend-date": "^1.12",
         "zf1/zend-registry": "^1.12"
     },