diff --git a/3.10/php8.0/apache/Dockerfile b/3.10/php8.0/apache/Dockerfile
index 57ec3f4..7bd3659 100644
--- a/3.10/php8.0/apache/Dockerfile
+++ b/3.10/php8.0/apache/Dockerfile
@@ -73,7 +73,7 @@ RUN set -ex; \
 	extDir="$(php -r 'echo ini_get("extension_dir");')"; \
 	[ -d "$extDir" ]; \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-	pecl install APCu-5.1.22; \
+	pecl install APCu-5.1.21; \
 	pecl install memcached-3.2.0; \
 	pecl install redis-5.3.7; \
 	\
diff --git a/3.10/php8.0/fpm-alpine/Dockerfile b/3.10/php8.0/fpm-alpine/Dockerfile
index 00c7103..2c6a5f4 100644
--- a/3.10/php8.0/fpm-alpine/Dockerfile
+++ b/3.10/php8.0/fpm-alpine/Dockerfile
@@ -76,7 +76,7 @@ RUN set -ex; \
 	[ -d "$extDir" ]; \
 	\
 # pecl will claim success even if one install fails, so we need to perform each install separately
-	pecl install APCu-5.1.22; \
+	pecl install APCu-5.1.21; \
 	pecl install mcrypt-1.0.4; \
 	pecl install memcached-3.2.0; \
 	pecl install redis-5.3.7; \
diff --git a/3.10/php8.0/fpm/Dockerfile b/3.10/php8.0/fpm/Dockerfile
index 8da502c..482ac68 100644
--- a/3.10/php8.0/fpm/Dockerfile
+++ b/3.10/php8.0/fpm/Dockerfile
@@ -73,7 +73,7 @@ RUN set -ex; \
 	extDir="$(php -r 'echo ini_get("extension_dir");')"; \
 	[ -d "$extDir" ]; \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-	pecl install APCu-5.1.22; \
+	pecl install APCu-5.1.21; \
 	pecl install memcached-3.2.0; \
 	pecl install redis-5.3.7; \
 	\
diff --git a/versions-helper.json b/versions-helper.json
index 049e630..bb0848a 100644
--- a/versions-helper.json
+++ b/versions-helper.json
@@ -103,7 +103,7 @@
     "phpVersions": {
       "8.0": {
         "pecl": {
-          "APCu": "5.1.22",
+          "APCu": "5.1.21",
           "memcached": "3.2.0",
           "redis": "5.3.7",
           "mcrypt": "1.0.4"