diff --git a/src/cache.rs b/src/cache.rs
index ff23b5a..387170c 100644
--- a/src/cache.rs
+++ b/src/cache.rs
@@ -261,8 +261,8 @@ mod tests {
     fn test_is_cacheable_path() {
         // Should cache
         assert!(is_cacheable_path("/"));
-        assert!(is_cacheable_path("/projects"));
-        assert!(is_cacheable_path("/projects/my-project"));
+        assert!(is_cacheable_path("/some-page"));
+        assert!(is_cacheable_path("/pgp"));
 
         // Should not cache
         assert!(!is_cacheable_path("/admin"));
@@ -274,12 +274,11 @@ mod tests {
 
     #[test]
     fn test_cache_key() {
-        assert_eq!(cache_key("/projects", None), "/projects");
-        assert_eq!(cache_key("/projects", Some("")), "/projects");
-        assert_eq!(
-            cache_key("/projects", Some("tag=rust")),
-            "/projects?tag=rust"
-        );
+        assert_eq!(cache_key("/", None), "/");
+        assert_eq!(cache_key("/", Some("")), "/");
+        assert_eq!(cache_key("/", Some("tag=rust")), "/?tag=rust");
+        assert_eq!(cache_key("/", Some("utm_source=x")), "/?utm_source=x");
+        assert_eq!(cache_key("/some-page", None), "/some-page");
     }
 
     #[tokio::test]
diff --git a/src/handlers/projects.rs b/src/handlers/projects.rs
index 42f6c68..c171bab 100644
--- a/src/handlers/projects.rs
+++ b/src/handlers/projects.rs
@@ -244,7 +244,7 @@ pub async fn create_project_handler(
     tracing::info!(project_id = %project.id, project_name = %project.name, "Project created");
 
     // Invalidate cached pages that display projects
-    state.isr_cache.invalidate_many(&["/", "/projects"]).await;
+    state.isr_cache.invalidate("/").await;
 
     (
         StatusCode::CREATED,
@@ -414,12 +414,7 @@ pub async fn update_project_handler(
     tracing::info!(project_id = %project.id, project_name = %project.name, "Project updated");
 
     // Invalidate cached pages that display projects
-    // Also invalidate slug-based path in case project detail pages exist
-    let project_path = format!("/projects/{}", project.slug);
-    state
-        .isr_cache
-        .invalidate_many(&["/", "/projects", &project_path])
-        .await;
+    state.isr_cache.invalidate("/").await;
 
     Json(project.to_api_admin_project(tags)).into_response()
 }
@@ -482,11 +477,7 @@ pub async fn delete_project_handler(
             tracing::info!(project_id = %project_id, project_name = %project.name, "Project deleted");
 
             // Invalidate cached pages that display projects
-            let project_path = format!("/projects/{}", project.slug);
-            state
-                .isr_cache
-                .invalidate_many(&["/", "/projects", &project_path])
-                .await;
+            state.isr_cache.invalidate("/").await;
 
             Json(project.to_api_admin_project(tags)).into_response()
         }
@@ -609,7 +600,7 @@ pub async fn add_project_tag_handler(
     match db::add_tag_to_project(&state.pool, project_id, tag_id).await {
         Ok(()) => {
             // Invalidate cached pages - tags affect how projects are displayed
-            state.isr_cache.invalidate_many(&["/", "/projects"]).await;
+            state.isr_cache.invalidate("/").await;
 
             (
                 StatusCode::CREATED,
@@ -681,7 +672,7 @@ pub async fn remove_project_tag_handler(
     match db::remove_tag_from_project(&state.pool, project_id, tag_id).await {
         Ok(()) => {
             // Invalidate cached pages - tags affect how projects are displayed
-            state.isr_cache.invalidate_many(&["/", "/projects"]).await;
+            state.isr_cache.invalidate("/").await;
 
             (
                 StatusCode::OK,
diff --git a/src/handlers/tags.rs b/src/handlers/tags.rs
index 7f8b744..61a27f6 100644
--- a/src/handlers/tags.rs
+++ b/src/handlers/tags.rs
@@ -80,7 +80,7 @@ pub async fn create_tag_handler(
     {
         Ok(tag) => {
             // Invalidate cached pages - tag list appears on project pages
-            state.isr_cache.invalidate_many(&["/", "/projects"]).await;
+            state.isr_cache.invalidate("/").await;
 
             (StatusCode::CREATED, Json(tag.to_api_tag())).into_response()
         }
@@ -226,7 +226,7 @@ pub async fn update_tag_handler(
     {
         Ok(updated_tag) => {
             // Invalidate cached pages - tag updates affect project displays
-            state.isr_cache.invalidate_many(&["/", "/projects"]).await;
+            state.isr_cache.invalidate("/").await;
 
             Json(updated_tag.to_api_tag()).into_response()
         }