diff --git a/beta/php8.1/apache/Dockerfile b/beta/php8.1/apache/Dockerfile
index 98822edbf9..20f4200b8c 100644
--- a/beta/php8.1/apache/Dockerfile
+++ b/beta/php8.1/apache/Dockerfile
@@ -130,8 +130,8 @@ RUN set -eux; \
 	find /etc/apache2 -type f -name '*.conf' -exec sed -ri 's/([[:space:]]*LogFormat[[:space:]]+"[^"]*)%h([^"]*")/\1%a\2/g' '{}' +
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.1/fpm-alpine/Dockerfile b/beta/php8.1/fpm-alpine/Dockerfile
index 539f49c154..8da8410b09 100644
--- a/beta/php8.1/fpm-alpine/Dockerfile
+++ b/beta/php8.1/fpm-alpine/Dockerfile
@@ -107,8 +107,8 @@ RUN { \
 	} > /usr/local/etc/php/conf.d/error-logging.ini
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.1/fpm/Dockerfile b/beta/php8.1/fpm/Dockerfile
index be4f412fcb..32b28d220f 100644
--- a/beta/php8.1/fpm/Dockerfile
+++ b/beta/php8.1/fpm/Dockerfile
@@ -111,8 +111,8 @@ RUN { \
 	} > /usr/local/etc/php/conf.d/error-logging.ini
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.2/apache/Dockerfile b/beta/php8.2/apache/Dockerfile
index fbb053592b..ce8a5a4527 100644
--- a/beta/php8.2/apache/Dockerfile
+++ b/beta/php8.2/apache/Dockerfile
@@ -130,8 +130,8 @@ RUN set -eux; \
 	find /etc/apache2 -type f -name '*.conf' -exec sed -ri 's/([[:space:]]*LogFormat[[:space:]]+"[^"]*)%h([^"]*")/\1%a\2/g' '{}' +
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.2/fpm-alpine/Dockerfile b/beta/php8.2/fpm-alpine/Dockerfile
index a90edeb407..f7f16072d8 100644
--- a/beta/php8.2/fpm-alpine/Dockerfile
+++ b/beta/php8.2/fpm-alpine/Dockerfile
@@ -107,8 +107,8 @@ RUN { \
 	} > /usr/local/etc/php/conf.d/error-logging.ini
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.2/fpm/Dockerfile b/beta/php8.2/fpm/Dockerfile
index 4a673525ca..2fded426a9 100644
--- a/beta/php8.2/fpm/Dockerfile
+++ b/beta/php8.2/fpm/Dockerfile
@@ -111,8 +111,8 @@ RUN { \
 	} > /usr/local/etc/php/conf.d/error-logging.ini
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.3/apache/Dockerfile b/beta/php8.3/apache/Dockerfile
index b6c9ac80ea..ea4e9e5ff7 100644
--- a/beta/php8.3/apache/Dockerfile
+++ b/beta/php8.3/apache/Dockerfile
@@ -130,8 +130,8 @@ RUN set -eux; \
 	find /etc/apache2 -type f -name '*.conf' -exec sed -ri 's/([[:space:]]*LogFormat[[:space:]]+"[^"]*)%h([^"]*")/\1%a\2/g' '{}' +
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.3/fpm-alpine/Dockerfile b/beta/php8.3/fpm-alpine/Dockerfile
index aab1df6fc3..b99934de7e 100644
--- a/beta/php8.3/fpm-alpine/Dockerfile
+++ b/beta/php8.3/fpm-alpine/Dockerfile
@@ -107,8 +107,8 @@ RUN { \
 	} > /usr/local/etc/php/conf.d/error-logging.ini
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/beta/php8.3/fpm/Dockerfile b/beta/php8.3/fpm/Dockerfile
index a737533277..158cb990d3 100644
--- a/beta/php8.3/fpm/Dockerfile
+++ b/beta/php8.3/fpm/Dockerfile
@@ -111,8 +111,8 @@ RUN { \
 	} > /usr/local/etc/php/conf.d/error-logging.ini
 
 RUN set -eux; \
-	version='6.6-RC3'; \
-	sha1='60067276501d014f6b1e3f29c2e488bd3d568b66'; \
+	version='6.6-RC4'; \
+	sha1='604d1c89fbf721339d8a0f559b0ff7c4584074fa'; \
 	\
 	curl -o wordpress.tar.gz -fL "https://wordpress.org/wordpress-$version.tar.gz"; \
 	echo "$sha1 *wordpress.tar.gz" | sha1sum -c -; \
diff --git a/versions.json b/versions.json
index 2ef4c18cf7..9000765b24 100644
--- a/versions.json
+++ b/versions.json
@@ -5,14 +5,14 @@
       "8.2",
       "8.3"
     ],
-    "sha1": "60067276501d014f6b1e3f29c2e488bd3d568b66",
-    "upstream": "6.6-RC3",
+    "sha1": "604d1c89fbf721339d8a0f559b0ff7c4584074fa",
+    "upstream": "6.6-RC4",
     "variants": [
       "apache",
       "fpm",
       "fpm-alpine"
     ],
-    "version": "6.6-RC3"
+    "version": "6.6-RC4"
   },
   "cli": {
     "phpVersions": [