diff --git a/mercurial-rust-metadata.patch b/mercurial-rust-metadata.patch
index 56cd956..179fee1 100644
--- a/mercurial-rust-metadata.patch
+++ b/mercurial-rust-metadata.patch
@@ -11,9 +11,20 @@ Update zstd to 0.10.0 (upstream is stuck on 0.5 because MSRV)
 
 Downgrade ouroboros to 0.13.0 (Fedora packaging needs update - rhbz#2027028)
 
+Work around narrow constraint on im-rc - https://www.mercurial-scm.org/pipermail/mercurial-devel/2022-May/148500.html
+
 diff --git a/rust/hg-core/Cargo.toml b/rust/hg-core/Cargo.toml
 --- a/rust/hg-core/Cargo.toml
 +++ b/rust/hg-core/Cargo.toml
+@@ -14,7 +14,7 @@ bytes-cast = "0.2"
+ byteorder = "1.3.4"
+ derive_more = "0.99"
+ home = "0.5"
+-im-rc = "15.0.*"
++im-rc = "15.0"
+ itertools = "0.9"
+ lazy_static = "1.4.0"
+ libc = "0.2"
 @@ -29,10 +29,10 @@ twox-hash = "1.5.0"
  same-file = "1.0.6"
  tempfile = "3.1.0"
diff --git a/mercurial.spec b/mercurial.spec
index ca1d177..3ed6a31 100644
--- a/mercurial.spec
+++ b/mercurial.spec
@@ -10,7 +10,7 @@
 Summary: A fast, lightweight Source Control Management system
 Name: mercurial
 Version: 6.1.3
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 # Release: 1.rc1%%{?dist}
 
@@ -272,6 +272,9 @@ pathfix.py -pni "%{python3}" %{buildroot}%{_bindir}/hg-ssh
 
 
 %changelog
+* Fri Jun 03 2022 Mads Kiilerich <mads@kiilerich.com> - 6.1.3-2
+- work around too narrow im-rc version constraint
+
 * Thu Jun 02 2022 Mads Kiilerich <mads@kiilerich.com> - 6.1.3-1
 - mercurial 6.1.3