diff --git a/pkgs/development/python-modules/pycrdt/Cargo.lock b/pkgs/development/python-modules/pycrdt/Cargo.lock
index b94c4f64066f..9c2e78591a90 100644
--- a/pkgs/development/python-modules/pycrdt/Cargo.lock
+++ b/pkgs/development/python-modules/pycrdt/Cargo.lock
@@ -245,7 +245,7 @@ dependencies = [
 
 [[package]]
 name = "pycrdt"
-version = "0.12.18"
+version = "0.12.20"
 dependencies = [
  "pyo3",
  "yrs",
@@ -568,9 +568,9 @@ checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
 [[package]]
 name = "yrs"
-version = "0.23.2"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38f76003877bef9c609585bad08e81438161c472c15d5e8116c8f87648866c6b"
+checksum = "bb1d740a98b12112352f05ddfc06c1505b66fca116601f9388b84be45d21f84d"
 dependencies = [
  "arc-swap",
  "async-lock",
diff --git a/pkgs/development/python-modules/pycrdt/default.nix b/pkgs/development/python-modules/pycrdt/default.nix
index 66c279cea955..8076d8155c91 100644
--- a/pkgs/development/python-modules/pycrdt/default.nix
+++ b/pkgs/development/python-modules/pycrdt/default.nix
@@ -19,14 +19,14 @@
 
 buildPythonPackage rec {
   pname = "pycrdt";
-  version = "0.12.18";
+  version = "0.12.20";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "y-crdt";
     repo = "pycrdt";
     tag = version;
-    hash = "sha256-pqGzAOoCJy+7cTtQD6FeFDicg6S0X2M+DM/x6Id28ac=";
+    hash = "sha256-kSwmQf46c5UJD75cfJxR3EfxFXExHhLXB+xdExr4lCk=";
   };
 
   postPatch = ''