diff --git a/Cargo.lock b/Cargo.lock
index 65f456e79..d3e7ec7b1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1838,9 +1838,9 @@ dependencies = [
 
 [[package]]
 name = "fsrs"
-version = "0.6.2"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b85b59d59f4ad51dc0abf80b5c420ed0e2cf00a41639674c690f8fadbc68dd4a"
+checksum = "70cec685337af48789e58cea6ef59ee9f01289d1083428b03fe14e76b98c817c"
 dependencies = [
  "burn",
  "itertools 0.12.1",
diff --git a/Cargo.toml b/Cargo.toml
index b81c6766c..31796f563 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ git = "https://github.com/ankitects/linkcheck.git"
 rev = "184b2ca50ed39ca43da13f0b830a463861adb9ca"
 
 [workspace.dependencies.fsrs]
-version = "0.6.2"
+version = "0.6.4"
 # git = "https://github.com/open-spaced-repetition/fsrs-rs.git"
 # rev = "58ca25ed2bc4bb1dc376208bbcaed7f5a501b941"
 # path = "../open-spaced-repetition/fsrs-rs"
diff --git a/cargo/licenses.json b/cargo/licenses.json
index 04d938cc2..f250b1f8c 100644
--- a/cargo/licenses.json
+++ b/cargo/licenses.json
@@ -1234,7 +1234,7 @@
   },
   {
     "name": "fsrs",
-    "version": "0.6.2",
+    "version": "0.6.4",
     "authors": "Open Spaced Repetition",
     "repository": "https://github.com/open-spaced-repetition/fsrs-rs",
     "license": "BSD-3-Clause",