diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index ebfa0b7..85d1c26 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -81,7 +81,6 @@ jobs:
           - debian-bookworm-arm64
           - debian-trixie-amd64
           - debian-trixie-arm64
-          - centos-7
           - almalinux-8
           - almalinux-8-aarch64
           - almalinux-9
diff --git a/packages/Rakefile b/packages/Rakefile
index 30205da..6ffa5c2 100644
--- a/packages/Rakefile
+++ b/packages/Rakefile
@@ -59,7 +59,6 @@ class GroongaNormalizerMySQLPackageTask < PackagesGroongaOrgPackageTask
       "almalinux-8-aarch64",
       "almalinux-9",
       "almalinux-9-aarch64",
-      "centos-7",
     ]
   end
 
diff --git a/packages/yum/centos-7/Dockerfile b/packages/yum/centos-7/Dockerfile
deleted file mode 100644
index 3734b74..0000000
--- a/packages/yum/centos-7/Dockerfile
+++ /dev/null
@@ -1,16 +0,0 @@
-ARG FROM=centos:7
-FROM ${FROM}
-
-ARG DEBUG
-
-RUN \
-  quiet=$([ "${DEBUG}" = "yes" ] || echo "--quiet") && \
-  yum install -y ${quiet} \
-    https://packages.groonga.org/centos/groonga-release-latest.noarch.rpm \
-    epel-release && \
-  yum groupinstall -y ${quiet} "Development Tools" && \
-  yum install -y ${quiet} \
-    ccache \
-    cmake3 \
-    groonga-devel && \
-  yum clean ${quiet} all