diff --git a/13.0/apache/Dockerfile b/13.0/apache/Dockerfile
index 355af907..bde3ca46 100644
--- a/13.0/apache/Dockerfile
+++ b/13.0/apache/Dockerfile
@@ -24,6 +24,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
@@ -52,8 +53,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/13.0/fpm-alpine/Dockerfile b/13.0/fpm-alpine/Dockerfile
index 58a214df..6eb98241 100644
--- a/13.0/fpm-alpine/Dockerfile
+++ b/13.0/fpm-alpine/Dockerfile
@@ -20,6 +20,7 @@ RUN set -ex; \
         autoconf \
         freetype-dev \
         icu-dev \
+        libevent-dev \
         libjpeg-turbo-dev \
         libmcrypt-dev \
         libpng-dev \
@@ -46,8 +47,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/13.0/fpm/Dockerfile b/13.0/fpm/Dockerfile
index 0e33cd1f..080eb7d3 100644
--- a/13.0/fpm/Dockerfile
+++ b/13.0/fpm/Dockerfile
@@ -24,6 +24,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
@@ -52,8 +53,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/14.0/apache/Dockerfile b/14.0/apache/Dockerfile
index d2eb99f8..64ed7f0c 100644
--- a/14.0/apache/Dockerfile
+++ b/14.0/apache/Dockerfile
@@ -24,6 +24,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
@@ -52,8 +53,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/14.0/fpm-alpine/Dockerfile b/14.0/fpm-alpine/Dockerfile
index 2d4b55a1..5c3d8040 100644
--- a/14.0/fpm-alpine/Dockerfile
+++ b/14.0/fpm-alpine/Dockerfile
@@ -20,6 +20,7 @@ RUN set -ex; \
         autoconf \
         freetype-dev \
         icu-dev \
+        libevent-dev \
         libjpeg-turbo-dev \
         libmcrypt-dev \
         libpng-dev \
@@ -46,8 +47,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/14.0/fpm/Dockerfile b/14.0/fpm/Dockerfile
index 5491e623..a547b05f 100644
--- a/14.0/fpm/Dockerfile
+++ b/14.0/fpm/Dockerfile
@@ -24,6 +24,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
@@ -52,8 +53,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/15.0/apache/Dockerfile b/15.0/apache/Dockerfile
index 57ae0a21..0f4ed34c 100644
--- a/15.0/apache/Dockerfile
+++ b/15.0/apache/Dockerfile
@@ -24,6 +24,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
@@ -53,8 +54,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/15.0/fpm-alpine/Dockerfile b/15.0/fpm-alpine/Dockerfile
index 70355541..40183188 100644
--- a/15.0/fpm-alpine/Dockerfile
+++ b/15.0/fpm-alpine/Dockerfile
@@ -20,6 +20,7 @@ RUN set -ex; \
         autoconf \
         freetype-dev \
         icu-dev \
+        libevent-dev \
         libjpeg-turbo-dev \
         libmcrypt-dev \
         libpng-dev \
@@ -47,8 +48,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/15.0/fpm/Dockerfile b/15.0/fpm/Dockerfile
index ee5e7ac6..b2d17da1 100644
--- a/15.0/fpm/Dockerfile
+++ b/15.0/fpm/Dockerfile
@@ -24,6 +24,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
@@ -53,8 +54,8 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
-    pecl install APCu-5.1.15; \
-    pecl install memcached-3.0.4; \
+    pecl install APCu-5.1.16; \
+    pecl install memcached-3.1.2; \
     pecl install redis-4.2.0; \
     pecl install imagick-3.4.3; \
     \
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index af584b5e..6b92d863 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -19,6 +19,7 @@ RUN set -ex; \
         autoconf \
         freetype-dev \
         icu-dev \
+        libevent-dev \
         libjpeg-turbo-dev \
         libmcrypt-dev \
         libpng-dev \
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 1b264823..c4c01814 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -23,6 +23,7 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
         libcurl4-openssl-dev \
+        libevent-dev \
         libfreetype6-dev \
         libicu-dev \
         libjpeg-dev \
diff --git a/update.sh b/update.sh
index 26e54424..16cea76c 100755
--- a/update.sh
+++ b/update.sh
@@ -25,8 +25,8 @@ declare -A extras=(
 )
 
 declare -A pecl_versions=(
-	[APCu]='5.1.15'
-	[memcached]='3.0.4'
+	[APCu]='5.1.16'
+	[memcached]='3.1.2'
 	[redis]='4.2.0'
 	[imagick]='3.4.3'
 )