diff --git a/Cargo.lock b/Cargo.lock
index 0a1d9aad18..98e333b6cc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -202,6 +202,7 @@ dependencies = [
  "argon2",
  "basen",
  "bcrypt",
+ "cfg-if",
  "chrono",
  "cuid2",
  "emojis",
diff --git a/Cargo.toml b/Cargo.toml
index 74d032aeae..3ada688b7f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ napi-build = "2.1.3"
 argon2 = "0.5.3"
 basen = "0.1.0"
 bcrypt = "0.15.1"
+cfg-if = "1.0.0"
 chrono = "0.4.38"
 convert_case = "0.6.0"
 cuid2 = "0.1.2"
diff --git a/packages/backend-rs/Cargo.toml b/packages/backend-rs/Cargo.toml
index c1b511b992..eb0fa82631 100644
--- a/packages/backend-rs/Cargo.toml
+++ b/packages/backend-rs/Cargo.toml
@@ -7,6 +7,7 @@ rust-version = "1.74"
 [features]
 default = []
 napi = ["dep:napi", "dep:napi-derive"]
+ci = []
 
 [lib]
 crate-type = ["cdylib", "lib"]
@@ -46,6 +47,7 @@ url = { workspace = true }
 urlencoding = { workspace = true }
 
 [dev-dependencies]
+cfg-if = { workspace = true }
 pretty_assertions = { workspace = true }
 
 [build-dependencies]
diff --git a/packages/backend-rs/src/misc/get_image_size.rs b/packages/backend-rs/src/misc/get_image_size.rs
index ac0de89015..c74b70e603 100644
--- a/packages/backend-rs/src/misc/get_image_size.rs
+++ b/packages/backend-rs/src/misc/get_image_size.rs
@@ -123,17 +123,20 @@ mod unit_test {
         let gif_url = "https://firefish.dev/firefish/firefish/-/raw/b9c3dfbd3d473cb2cee20c467eeae780bc401271/packages/backend/test/resources/anime.gif";
         let mp3_url = "https://firefish.dev/firefish/firefish/-/blob/5891a90f71a8b9d5ea99c683ade7e485c685d642/packages/backend/assets/sounds/aisha/1.mp3";
 
-        // Delete caches in case you run this test multiple times
-        // (should be disabled in CI tasks)
-        cache::delete_one(cache::Category::FetchUrl, png_url_1).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, png_url_2).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, png_url_3).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, rotated_jpeg_url).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, webp_url_1).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, webp_url_2).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, ico_url).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, gif_url).unwrap();
-        cache::delete_one(cache::Category::FetchUrl, mp3_url).unwrap();
+        cfg_if::cfg_if! {
+            if #[cfg(not(feature = "ci"))] {
+                // Delete caches in case you run this test multiple times
+                cache::delete_one(cache::Category::FetchUrl, png_url_1).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, png_url_2).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, png_url_3).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, rotated_jpeg_url).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, webp_url_1).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, webp_url_2).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, ico_url).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, gif_url).unwrap();
+                cache::delete_one(cache::Category::FetchUrl, mp3_url).unwrap();
+            }
+        }
 
         let png_size_1 = ImageSize {
             width: 1024,
diff --git a/packages/backend-rs/src/misc/latest_version.rs b/packages/backend-rs/src/misc/latest_version.rs
index 1994d3a921..5620d204d1 100644
--- a/packages/backend-rs/src/misc/latest_version.rs
+++ b/packages/backend-rs/src/misc/latest_version.rs
@@ -79,8 +79,11 @@ mod unit_test {
 
     #[tokio::test]
     async fn check_version() {
-        // TODO: don't need to do this in CI tasks
-        cache::delete_one(cache::Category::FetchUrl, UPSTREAM_PACKAGE_JSON_URL).unwrap();
+        cfg_if::cfg_if! {
+            if #[cfg(not(feature = "ci"))] {
+                cache::delete_one(cache::Category::FetchUrl, UPSTREAM_PACKAGE_JSON_URL).unwrap();
+            }
+        }
 
         // fetch from firefish.dev
         validate_version(latest_version().await.unwrap());