diff --git a/Gemfile.lock b/Gemfile.lock
index 02f30b9d686..3dce80deb87 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -208,7 +208,7 @@ GEM
     fast_blank (1.0.0)
     fast_gettext (1.6.0)
     ffaker (2.4.0)
-    ffi (1.9.18)
+    ffi (1.9.25)
     flipper (0.13.0)
     flipper-active_record (0.13.0)
       activerecord (>= 3.2, < 6)
diff --git a/Gemfile.rails5.lock b/Gemfile.rails5.lock
index 2bdb1e035d8..e1295e1ff9b 100644
--- a/Gemfile.rails5.lock
+++ b/Gemfile.rails5.lock
@@ -211,7 +211,7 @@ GEM
     fast_blank (1.0.0)
     fast_gettext (1.6.0)
     ffaker (2.4.0)
-    ffi (1.9.18)
+    ffi (1.9.25)
     flipper (0.13.0)
     flipper-active_record (0.13.0)
       activerecord (>= 3.2, < 6)
diff --git a/changelogs/unreleased/51180-update-ffi-to-1-9-25.yml b/changelogs/unreleased/51180-update-ffi-to-1-9-25.yml
new file mode 100644
index 00000000000..67354d6a610
--- /dev/null
+++ b/changelogs/unreleased/51180-update-ffi-to-1-9-25.yml
@@ -0,0 +1,5 @@
+---
+title: Update ffi to 1.9.25
+merge_request: 21561
+author: Takuya Noguchi
+type: other
diff --git a/qa/Gemfile.lock b/qa/Gemfile.lock
index 8f523e55adc..8d28fcacc05 100644
--- a/qa/Gemfile.lock
+++ b/qa/Gemfile.lock
@@ -32,7 +32,7 @@ GEM
     diff-lcs (1.3)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
-    ffi (1.9.18)
+    ffi (1.9.25)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
     i18n (0.9.1)