diff --git a/.github/workflows/tree.yml b/.github/workflows/tree.yml
index a415aa07d9d8f..74d15a77a0fe4 100644
--- a/.github/workflows/tree.yml
+++ b/.github/workflows/tree.yml
@@ -46,6 +46,9 @@ jobs:
       - name: Check entrypoint tag
         run: ./tools/check-entrypoint-tag.sh
 
+      - name: Check downgrade versions
+        run: ./tools/check-downgrade-versions.sh
+
       - name: Send VK Teams message on failure
         if: failure()
         uses: ./.github/actions/report-job-status
diff --git a/src/box/lua/upgrade.lua b/src/box/lua/upgrade.lua
index 51a5b7527bd46..95fcfc11f1aed 100644
--- a/src/box/lua/upgrade.lua
+++ b/src/box/lua/upgrade.lua
@@ -2092,6 +2092,7 @@ end
 
 -- List of all Tarantool releases we can downgrade to.
 local downgrade_versions = {
+    -- DOWNGRADE VERSIONS BEGIN
     "2.8.2",
     "2.8.3",
     "2.8.4",
@@ -2105,6 +2106,7 @@ local downgrade_versions = {
     "2.11.1",
     "3.0.0",
     "3.1.0",
+    -- DOWNGRADE VERSIONS END
 }
 
 -- Downgrade or list downgrade issues depending of dry_run argument value.
diff --git a/tools/check-downgrade-versions.sh b/tools/check-downgrade-versions.sh
new file mode 100755
index 0000000000000..91eaa8b48e26d
--- /dev/null
+++ b/tools/check-downgrade-versions.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+#
+# This script checks that we can downgrade to all the released versions
+# less then being released. For example when releasing version 2.11.4
+# we check that we can downgrade to 2.11.3, 2.11.2, ..., 2.10.8, 2.10.7, ...
+# 2.8.2.
+#
+# The versions we can downgrade to are those mentioned in downgrade_versions
+# list in src/box/lua/upgrade.lua. For the sake of parsing simplicity
+# the versions should be between begin and end marks:
+# -- DOWNGRADE VERSIONS BEGIN
+# -- DOWNGRADE VERSIONS END
+#
+# The check is only done for the commit tagged as release version
+# (annotated tag with name like 2.11.4).
+
+set -eo pipefail
+
+error() {
+   echo "$@" 1>&2
+   exit 1
+}
+
+# Tags that should not be considered.
+tag_exceptions=`mktemp`
+echo 2.9.0 > $tag_exceptions
+
+this_tag=`git describe --exact-match 2>/dev/null || true`
+tag_pattern='^[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+$'
+# Make downgrade check only for the release tags.
+if [[ $this_tag =~ $tag_pattern ]]; then
+    # File with expected versions.
+    expected_versions=`mktemp`
+    # Sorted (in version order) list of release tags.
+    tags=`git tag | grep -E $tag_pattern | sort -V`
+    skip=1
+    # Cut tags below 2.8.2 and above $this_tag
+    for tag in $tags; do
+        if [[ $tag = '2.8.2' ]]; then
+            skip=0
+        fi
+        if [[ $skip -eq 0 ]]; then
+            echo $tag >> $expected_versions
+        fi
+        if [[ $tag = $this_tag ]]; then
+            skip=1
+        fi
+    done
+
+    # File of versions we can downgrade to.
+    actual_versions=`mktemp`
+    begin_mark='DOWNGRADE VERSIONS BEGIN'
+    end_mark='DOWNGRADE VERSIONS END'
+    upgrade_file='src/box/lua/upgrade.lua'
+    grep -q "$begin_mark" $upgrade_file ||
+        error "Cannot find start mark in $upgrade_file"
+    grep -q "$end_mark" $upgrade_file ||
+        error "Cannot find end mark in $upgrade_file"
+
+    # Cut part of $upgrade_file between $begin_mark and $end_mark
+    # and for every line strip everything except version.
+    awk "/$begin_mark/{flag=1; next}
+         /$end_mark/{flag=0} flag" $upgrade_file |
+         sed -E 's/.*"(.*)".*/\1/' > $actual_versions
+
+    cat $tag_exceptions >> $actual_versions
+    # Sort is usual order before using `comm`.
+    sort -o $expected_versions $expected_versions
+    sort -o $actual_versions $actual_versions
+    diff=`comm -23 $expected_versions $actual_versions`
+    if [ -n "$diff" ]; then
+        echo "Some versions are missing in downgrade list:" 1>&2
+        echo "$diff"
+        exit 1
+    fi
+fi
+
+echo OK
+exit 0