diff --git a/Cargo.lock b/Cargo.lock
index 17a66a4f..83cbd322 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4627,7 +4627,7 @@ dependencies = [
  "image",
  "serde",
  "serde_json",
- "sylpheed-formats 0.1.0 (git+https://git.mc02.dev/fabi/Sylpheed.git?tag=formats-pin-2026-08-30b)",
+ "sylpheed-formats 0.1.0 (git+https://git.mc02.dev/fabi/Sylpheed.git?tag=formats-pin-2026-09-01)",
 ]
 
 [[package]]
@@ -4651,7 +4651,7 @@ dependencies = [
 [[package]]
 name = "sylpheed-formats"
 version = "0.1.0"
-source = "git+https://git.mc02.dev/fabi/Sylpheed.git?tag=formats-pin-2026-08-30b#b5df02a4f74c80b93b93cd1a26296ee08040d826"
+source = "git+https://git.mc02.dev/fabi/Sylpheed.git?tag=formats-pin-2026-09-01#1cd5b8b1cb1f02eefc0865e1a1fe280e44831c9d"
 dependencies = [
  "anyhow",
  "binrw",
diff --git a/crates/sylpheed-export/Cargo.toml b/crates/sylpheed-export/Cargo.toml
index 81334496..cc39da50 100644
--- a/crates/sylpheed-export/Cargo.toml
+++ b/crates/sylpheed-export/Cargo.toml
@@ -81,7 +81,7 @@ license.workspace = true
 # geometry -- does NOT reach this port from here: `sylpheed-cli` builds from the
 # WORKSPACE crate, so the reference renderer stays unrotated until the tag lands
 # on `main`. This bump is for the parser, not for the renderer.
-sylpheed-formats = { git = "https://git.mc02.dev/fabi/Sylpheed.git", tag = "formats-pin-2026-08-30b" }
+sylpheed-formats = { git = "https://git.mc02.dev/fabi/Sylpheed.git", tag = "formats-pin-2026-09-01" }
 
 serde      = { version = "1", features = ["derive"] }
 serde_json = "1"