diff --git a/.github/workflows/cmake-build-ci.gen b/.github/workflows/cmake-build-ci.gen
index 50e1e505..fc3aea12 100755
--- a/.github/workflows/cmake-build-ci.gen
+++ b/.github/workflows/cmake-build-ci.gen
@@ -172,6 +172,7 @@ function steps_getdeps($os_vnd) {
   if ($os_vnd === "macOS") :
 ?>
         run: |
+          brew update # we need at least memcached-1.6.10 for the META proto
           brew install bison flex sphinx-doc ${INSTALL_MEMCACHED}
           brew services stop memcached || true
           echo MEMCACHED_BINARY="/usr/local/bin/memcached" >> ${GITHUB_ENV}
@@ -343,7 +344,7 @@ jobs:
         with:
           repository: memcached/memcached
           path: memcached
-          ref: 1.6.7
+          ref: 1.6.13
 <?php steps("Linux"); ?>
       - uses: codecov/codecov-action@v1.0.13
 
diff --git a/.github/workflows/cmake-build-ci.yml b/.github/workflows/cmake-build-ci.yml
index 7ad9ad25..9675ab0c 100644
--- a/.github/workflows/cmake-build-ci.yml
+++ b/.github/workflows/cmake-build-ci.yml
@@ -51,7 +51,7 @@ jobs:
         with:
           repository: memcached/memcached
           path: memcached
-          ref: 1.6.7
+          ref: 1.6.13
       - name: Prepare environment (for cur gnu on ubuntu-20.04)
         if: (env.OS_VER=='ubuntu-20.04') && (env.CC_VND=='gnu') && (env.CC_VER=='cur')
         run: |
@@ -222,6 +222,7 @@ jobs:
       - name: Install dependencies (macOS)
         if: runner.os == 'macOS'
         run: |
+          brew update # we need at least memcached-1.6.10 for the META proto
           brew install bison flex sphinx-doc ${INSTALL_MEMCACHED}
           brew services stop memcached || true
           echo MEMCACHED_BINARY="/usr/local/bin/memcached" >> ${GITHUB_ENV}
@@ -296,6 +297,7 @@ jobs:
       - name: Install dependencies (macOS)
         if: runner.os == 'macOS'
         run: |
+          brew update # we need at least memcached-1.6.10 for the META proto
           brew install bison flex sphinx-doc ${INSTALL_MEMCACHED}
           brew services stop memcached || true
           echo MEMCACHED_BINARY="/usr/local/bin/memcached" >> ${GITHUB_ENV}