diff --git a/testenv/env/php-7.4/Dockerfile b/testenv/env/php-7.4/Dockerfile
index 5de537e..ff29e36 100644
--- a/testenv/env/php-7.4/Dockerfile
+++ b/testenv/env/php-7.4/Dockerfile
@@ -1,13 +1,13 @@
 FROM php:7.4
-ENV phpunit_verison 7.5
+ENV phpunit_version 7.5
 ENV redis_version 6.0.8
 
 RUN apt-get update && \
     apt-get install -y wget libssl-dev
 
-RUN wget https://phar.phpunit.de/phpunit-${phpunit_verison}.phar && \
-    chmod +x phpunit-${phpunit_verison}.phar && \
-    mv phpunit-${phpunit_verison}.phar /usr/local/bin/phpunit
+RUN wget https://phar.phpunit.de/phpunit-${phpunit_version}.phar && \
+    chmod +x phpunit-${phpunit_version}.phar && \
+    mv phpunit-${phpunit_version}.phar /usr/local/bin/phpunit
 
 # install php extension
 RUN yes '' | pecl install -f redis && \