diff --git a/20/apache/Dockerfile b/20/apache/Dockerfile
index 4a0c42c7..b098769e 100644
--- a/20/apache/Dockerfile
+++ b/20/apache/Dockerfile
@@ -61,7 +61,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/20/fpm-alpine/Dockerfile b/20/fpm-alpine/Dockerfile
index ff68e28b..d9a09717 100644
--- a/20/fpm-alpine/Dockerfile
+++ b/20/fpm-alpine/Dockerfile
@@ -52,7 +52,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/20/fpm/Dockerfile b/20/fpm/Dockerfile
index b4454c91..b4bc821d 100644
--- a/20/fpm/Dockerfile
+++ b/20/fpm/Dockerfile
@@ -61,7 +61,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/21/apache/Dockerfile b/21/apache/Dockerfile
index b25afb12..0d57db93 100644
--- a/21/apache/Dockerfile
+++ b/21/apache/Dockerfile
@@ -61,7 +61,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/21/fpm-alpine/Dockerfile b/21/fpm-alpine/Dockerfile
index 43aca295..1af397a3 100644
--- a/21/fpm-alpine/Dockerfile
+++ b/21/fpm-alpine/Dockerfile
@@ -52,7 +52,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/21/fpm/Dockerfile b/21/fpm/Dockerfile
index ad232b5c..03e7f340 100644
--- a/21/fpm/Dockerfile
+++ b/21/fpm/Dockerfile
@@ -61,7 +61,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/22/apache/Dockerfile b/22/apache/Dockerfile
index b033852d..0a44b584 100644
--- a/22/apache/Dockerfile
+++ b/22/apache/Dockerfile
@@ -61,7 +61,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/22/fpm-alpine/Dockerfile b/22/fpm-alpine/Dockerfile
index 1521d32b..ca363004 100644
--- a/22/fpm-alpine/Dockerfile
+++ b/22/fpm-alpine/Dockerfile
@@ -52,7 +52,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \
diff --git a/22/fpm/Dockerfile b/22/fpm/Dockerfile
index d2c6ef09..330eeff7 100644
--- a/22/fpm/Dockerfile
+++ b/22/fpm/Dockerfile
@@ -61,7 +61,7 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.20; \
+    pecl install APCu-5.1.21; \
     pecl install memcached-3.1.5; \
     pecl install redis-5.3.4; \
     pecl install imagick-3.5.1; \