diff --git a/.gitignore b/.gitignore
index cafbb02..d28514d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /difftastic-0.39.0.crate
+/difftastic-0.42.0.crate
diff --git a/difftastic-fix-metadata.diff b/difftastic-fix-metadata.diff
index 9c1c345..5fcd47c 100644
--- a/difftastic-fix-metadata.diff
+++ b/difftastic-fix-metadata.diff
@@ -1,11 +1,11 @@
---- difftastic-0.39.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ difftastic-0.39.0/Cargo.toml	2022-12-21T21:12:30.563928+00:00
+--- difftastic-0.42.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ difftastic-0.42.0/Cargo.toml	2023-01-17T17:31:26.423823+00:00
 @@ -55,7 +55,7 @@
  version = "0.2.108"
  
  [dependencies.libmimalloc-sys]
 -version = "=0.1.24"
-+version = "0.1"
++version = "0.1.24"
  
  [dependencies.log]
  version = "0.4.14"
diff --git a/rust-difftastic.spec b/rust-difftastic.spec
index b50ec2e..459e58f 100644
--- a/rust-difftastic.spec
+++ b/rust-difftastic.spec
@@ -4,7 +4,7 @@
 %global crate difftastic
 
 Name:           rust-difftastic
-Version:        0.39.0
+Version:        0.42.0
 Release:        %autorelease
 Summary:        Structural diff that understands syntax
 
diff --git a/sources b/sources
index 5c1fe47..1440a6a 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (difftastic-0.39.0.crate) = 16acfa2d3b0002bf104dfcffa9c54294d22b2abd8748f3398004aa5b70a3995a5fd598a14ce287e3a1dd24f3d2790d77be7e909fabe4caa87cab8862a79e6da8
+SHA512 (difftastic-0.42.0.crate) = 1f91969173d65232420cf6823a6c5a27ddf9a638f05bcae53b845af27e019d6193c7f5a9c779877daa19cd6cfda438a7248f3ff3fb34d1db12b89ed2a40bac0d