diff --git a/Cargo.lock b/Cargo.lock
index b55285b0931..93ea583d008 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1843,9 +1843,9 @@ dependencies = [
 
 [[package]]
 name = "diesel"
-version = "2.2.8"
+version = "2.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "470eb10efc8646313634c99bb1593f402a6434cbd86e266770c6e39219adb86a"
+checksum = "34d3950690ba3a6910126162b47e775e203006d4242a15de912bec6c0a695153"
 dependencies = [
  "bigdecimal",
  "bitflags",
diff --git a/Cargo.toml b/Cargo.toml
index d322f1f1633..d7bc480d80d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -82,7 +82,7 @@ cookie = { version = "=0.18.1", features = ["secure"] }
 deadpool-diesel = { version = "=0.6.1", features = ["postgres", "tracing"] }
 derive_more = { version = "=2.0.1", features = ["deref", "deref_mut", "display"] }
 dialoguer = "=0.11.0"
-diesel = { version = "=2.2.8", features = ["postgres", "serde_json", "chrono", "numeric"] }
+diesel = { version = "=2.2.9", features = ["postgres", "serde_json", "chrono", "numeric"] }
 diesel-async = { version = "=0.5.2", features = ["async-connection-wrapper", "deadpool", "postgres"] }
 diesel_full_text_search = "=2.2.0"
 diesel_migrations = { version = "=2.2.0", features = ["postgres"] }
@@ -143,7 +143,7 @@ crates_io_tarball = { path = "crates/crates_io_tarball", features = ["builder"]
 crates_io_team_repo = { path = "crates/crates_io_team_repo", features = ["mock"] }
 crates_io_test_db = { path = "crates/crates_io_test_db" }
 claims = "=0.8.0"
-diesel = { version = "=2.2.8", features = ["r2d2"] }
+diesel = { version = "=2.2.9", features = ["r2d2"] }
 googletest = "=0.14.0"
 insta = { version = "=1.42.2", features = ["glob", "json", "redactions"] }
 regex = "=1.11.1"
diff --git a/backend.Dockerfile b/backend.Dockerfile
index d90ba41ea1e..57fe1547cab 100644
--- a/backend.Dockerfile
+++ b/backend.Dockerfile
@@ -4,7 +4,7 @@ ARG RUST_VERSION=1.86.0
 FROM rust:$RUST_VERSION
 
 # renovate: datasource=crate depName=diesel_cli versioning=semver
-ARG DIESEL_CLI_VERSION=2.2.8
+ARG DIESEL_CLI_VERSION=2.2.9
 
 RUN apt-get update \
     && apt-get install -y postgresql \
diff --git a/crates/crates_io_database/Cargo.toml b/crates/crates_io_database/Cargo.toml
index b442076c7b0..626644f08a7 100644
--- a/crates/crates_io_database/Cargo.toml
+++ b/crates/crates_io_database/Cargo.toml
@@ -12,7 +12,7 @@ bon = "=3.5.1"
 chrono = { version = "=0.4.40", default-features = false, features = ["serde"] }
 crates_io_diesel_helpers = { path = "../crates_io_diesel_helpers" }
 crates_io_index = { path = "../crates_io_index" }
-diesel = { version = "=2.2.8", features = ["serde_json", "chrono", "numeric"] }
+diesel = { version = "=2.2.9", features = ["serde_json", "chrono", "numeric"] }
 diesel-async = "=0.5.2"
 diesel_full_text_search = "=2.2.0"
 futures-util = "=0.3.31"
diff --git a/crates/crates_io_database_dump/Cargo.toml b/crates/crates_io_database_dump/Cargo.toml
index a18242fd298..5fdaaf656b3 100644
--- a/crates/crates_io_database_dump/Cargo.toml
+++ b/crates/crates_io_database_dump/Cargo.toml
@@ -22,7 +22,7 @@ zip = { version = "=2.6.1", default-features = false, features = ["deflate"] }
 
 [dev-dependencies]
 crates_io_test_db = { path = "../crates_io_test_db" }
-diesel = "=2.2.8"
+diesel = "=2.2.9"
 diesel-async = { version = "=0.5.2", features = ["postgres"] }
 insta = { version = "=1.42.2", features = ["glob"] }
 tokio = { version = "=1.44.2", features = ["macros", "rt"] }
diff --git a/crates/crates_io_diesel_helpers/Cargo.toml b/crates/crates_io_diesel_helpers/Cargo.toml
index 8530f75d1a9..6afd6da7467 100644
--- a/crates/crates_io_diesel_helpers/Cargo.toml
+++ b/crates/crates_io_diesel_helpers/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2021"
 workspace = true
 
 [dependencies]
-diesel = { version = "=2.2.8", features = ["postgres"] }
+diesel = { version = "=2.2.9", features = ["postgres"] }
 semver = "=1.0.26"
 serde = { version = "=1.0.219", features = ["derive"] }
 
diff --git a/crates/crates_io_test_db/Cargo.toml b/crates/crates_io_test_db/Cargo.toml
index 1ca1153a676..58be22a02c6 100644
--- a/crates/crates_io_test_db/Cargo.toml
+++ b/crates/crates_io_test_db/Cargo.toml
@@ -9,7 +9,7 @@ workspace = true
 
 [dependencies]
 crates_io_env_vars = { path = "../crates_io_env_vars" }
-diesel = { version = "=2.2.8", features = ["postgres", "r2d2"] }
+diesel = { version = "=2.2.9", features = ["postgres", "r2d2"] }
 diesel-async = { version = "=0.5.2", features = ["postgres"] }
 diesel_migrations = { version = "=2.2.0", features = ["postgres"] }
 rand = "=0.9.0"
diff --git a/crates/crates_io_worker/Cargo.toml b/crates/crates_io_worker/Cargo.toml
index f495e474fc2..4ee9b84125f 100644
--- a/crates/crates_io_worker/Cargo.toml
+++ b/crates/crates_io_worker/Cargo.toml
@@ -9,7 +9,7 @@ workspace = true
 
 [dependencies]
 anyhow = "=1.0.97"
-diesel = { version = "=2.2.8", features = ["postgres", "serde_json"] }
+diesel = { version = "=2.2.9", features = ["postgres", "serde_json"] }
 diesel-async = { version = "=0.5.2", features = ["async-connection-wrapper", "deadpool", "postgres"] }
 futures-util = "=0.3.31"
 sentry-core = { version = "=0.37.0", features = ["client"] }