diff --git a/_service b/_service
index 17b9e02..e668833 100644
--- a/_service
+++ b/_service
@@ -59,7 +59,7 @@
     <param name="exclude">tests</param>
     <param name="exclude">unicode_utils</param>
     <param name="filename">unison</param>
-    <param name="revision">4ad8511150dee24e924f25247342b370e8b8b651</param>
+    <param name="revision">94b4a1bb240b16276adc34731ff831e2db89f9ff</param>
     <param name="scm">git</param>
     <param name="submodules">disable</param>
     <param name="url">https://github.com/bcpierce00/unison.git</param>
diff --git a/unison-2.52.0.tar.xz b/unison-2.52.0.tar.xz
deleted file mode 100644
index bc71994..0000000
--- a/unison-2.52.0.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a3a71e6f2213be6c2e2afbb91c027f94a1dd6c49719a581fe356fa8d559d899b
-size 349556
diff --git a/unison-2.52.1.tar.xz b/unison-2.52.1.tar.xz
new file mode 100644
index 0000000..36fe1e4
--- /dev/null
+++ b/unison-2.52.1.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:34a5ed34a5c455692a6a863f08652609f72690b0dc8a6c2befa204c5c82c6c88
+size 355440
diff --git a/unison.changes b/unison.changes
index dc06073..d5c5250 100644
--- a/unison.changes
+++ b/unison.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Sun May  8 19:19:19 UTC 2022 - olaf@aepfle.de
+
+- Update to version 2.52.1
+  * Remove rsh:// URI scheme
+  * Significant bugfixes and minor improvements
+
 -------------------------------------------------------------------
 Mon Apr  4 04:04:04 UTC 2022 - olaf@aepfle.de
 
diff --git a/unison.spec b/unison.spec
index fe2664f..40bb949 100644
--- a/unison.spec
+++ b/unison.spec
@@ -17,7 +17,7 @@
 
 
 Name:           unison
-Version:        2.52.0
+Version:        2.52.1
 Release:        0
 %{?ocaml_preserve_bytecode}
 Summary:        File synchronization tool