diff --git a/.gitignore b/.gitignore
index 02e8c93..33891c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ camlimages-3.0.2.tgz
 /4.1.0.tar.gz
 /4.2.2.tar.gz
 /4.2.4.tar.gz
+/4.2.5.tar.gz
diff --git a/camlimages-4.2.4-add-g-flag.patch b/camlimages-4.2.4-add-g-flag.patch
deleted file mode 100644
index 623712d..0000000
--- a/camlimages-4.2.4-add-g-flag.patch
+++ /dev/null
@@ -1,22 +0,0 @@
---- camlspotter-camlimages-13777ef409e7/OMakefile.old	2017-08-09 11:22:20.223133043 +0100
-+++ camlspotter-camlimages-13777ef409e7/OMakefile	2017-08-09 11:22:26.886132978 +0100
-@@ -19,7 +19,7 @@
- # For release, -warn-error should not be put
- 
- # OCAMLFLAGS= -w A-4-9-35-37-40-41-42-44-45-48
--OCAMLFLAGS= -w A-4-9-37-40-41-42-44-45-41-48-50 -unsafe-string
-+OCAMLFLAGS= -w A-4-9-37-40-41-42-44-45-41-48-50 -unsafe-string -g
- 
- # For the development, -warn-error A is turned on
- if $(file-exists DEV)
---- camlspotter-camlimages-13777ef409e7/OMyMakeroot.old	2017-08-09 12:38:11.026148848 +0100
-+++ camlspotter-camlimages-13777ef409e7/OMyMakeroot	2017-08-09 12:38:20.812149472 +0100
-@@ -133,7 +133,7 @@
- OCamlMkLibC(name, files, ldflags) =
-   protected.COBJS=$(addsuffix .o, $(files))
-   dll$(name).so lib$(name).a: $(COBJS)
--    $(OCAMLMKLIB) -o $(name) $(LDFLAGS) $(ldflags) $(COBJS)
-+    $(OCAMLMKLIB) -g -o $(name) $(LDFLAGS) $(ldflags) $(COBJS)
-   return $(array dll$(name).so, lib$(name).a)
- 
- # If ocamlmklib does not work for you, you can do:
diff --git a/camlimages-4.2.5-add-g-flag.patch b/camlimages-4.2.5-add-g-flag.patch
new file mode 100644
index 0000000..77a6d14
--- /dev/null
+++ b/camlimages-4.2.5-add-g-flag.patch
@@ -0,0 +1,24 @@
+diff -ur camlspotter-camlimages-8ca76028cff3.old/OMakefile camlspotter-camlimages-8ca76028cff3/OMakefile
+--- camlspotter-camlimages-8ca76028cff3.old/OMakefile	2017-11-20 10:50:59.000000000 +0000
++++ camlspotter-camlimages-8ca76028cff3/OMakefile	2017-11-22 14:19:46.903902025 +0000
+@@ -19,7 +19,7 @@
+ # For release, -warn-error should not be put
+ 
+ # OCAMLFLAGS= -w A-4-9-35-37-40-41-42-44-45-48
+-OCAMLFLAGS= -w A-3-4-9-37-40-41-42-44-45-41-48-50 -safe-string
++OCAMLFLAGS= -w A-3-4-9-37-40-41-42-44-45-41-48-50 -safe-string -g
+ 
+ # For the development, -warn-error A is turned on
+ if $(file-exists DEV)
+diff -ur camlspotter-camlimages-8ca76028cff3.old/OMyMakeroot camlspotter-camlimages-8ca76028cff3/OMyMakeroot
+--- camlspotter-camlimages-8ca76028cff3.old/OMyMakeroot	2017-11-20 10:50:59.000000000 +0000
++++ camlspotter-camlimages-8ca76028cff3/OMyMakeroot	2017-11-22 14:19:32.461902772 +0000
+@@ -133,7 +133,7 @@
+ OCamlMkLibC(name, files, ldflags) =
+   protected.COBJS=$(addsuffix .o, $(files))
+   dll$(name).so lib$(name).a: $(COBJS)
+-    $(OCAMLMKLIB) -o $(name) $(LDFLAGS) $(ldflags) $(COBJS)
++    $(OCAMLMKLIB) -g -o $(name) $(LDFLAGS) $(ldflags) $(COBJS)
+   return $(array dll$(name).so, lib$(name).a)
+ 
+ # If ocamlmklib does not work for you, you can do:
diff --git a/camlimages-4.2.5-safe-string.patch b/camlimages-4.2.5-safe-string.patch
new file mode 100644
index 0000000..fc9f998
--- /dev/null
+++ b/camlimages-4.2.5-safe-string.patch
@@ -0,0 +1,33 @@
+--- ./camlspotter-camlimages-8ca76028cff3.old/examples/tiffps/tiffps.ml	2017-11-20 10:50:59.000000000 +0000
++++ ./camlspotter-camlimages-8ca76028cff3/examples/tiffps/tiffps.ml	2017-11-22 14:24:13.276888193 +0000
+@@ -58,7 +58,7 @@
+ 
+ (* Scanlined loader *)
+ type scanlined_loader = {
+-    read_next_line: (string -> unit);
++    read_next_line: (bytes -> unit);
+     close: (unit -> unit)
+   }
+ 
+@@ -410,7 +410,7 @@
+             function x ->
+               let adrs = x * 3 in
+               for i = 0 to 2 do
+-                print_string (sprintf "%02x" (Char.code buf.[adrs+i]))
++                print_string (sprintf "%02x" (Char.code (Bytes.get buf (adrs+i))))
+               done
+           else
+             let mono r g b =
+@@ -418,9 +418,9 @@
+             function x ->
+               let adrs = x * 3 in
+               let m =
+-                mono (Char.code buf.[adrs])
+-                     (Char.code buf.[adrs + 1])
+-                     (Char.code buf.[adrs + 2]) in
++                mono (Char.code (Bytes.get buf adrs))
++                     (Char.code (Bytes.get buf (adrs + 1)))
++                     (Char.code (Bytes.get buf (adrs + 2))) in
+               for _i = 0 to 2 do print_string (sprintf "%02x" m) done in
+         if not conf.mirror
+         then for x = x1 to x1 + w - 1 do print_pixel x done
diff --git a/ocaml-camlimages.spec b/ocaml-camlimages.spec
index b01a1c4..dc8bdfe 100644
--- a/ocaml-camlimages.spec
+++ b/ocaml-camlimages.spec
@@ -4,8 +4,8 @@
 %undefine _debugsource_packages
 
 Name:           ocaml-camlimages
-Version:        4.2.4
-Release:        2%{?dist}
+Version:        4.2.5
+Release:        1%{?dist}
 Summary:        OCaml image processing library
 License:        LGPLv2 with exceptions
 
@@ -17,7 +17,9 @@ Source0:        https://bitbucket.org/camlspotter/camlimages/get/%{version}.tar.
 # use the library.
 Source1:        camlimages-2.2.0-htmlref.tar.gz
 
-Patch1:         camlimages-4.2.4-add-g-flag.patch
+Patch1:         camlimages-4.2.5-add-g-flag.patch
+# Fix an example which has safe-string problems.
+Patch2:         camlimages-4.2.5-safe-string.patch
 
 BuildRequires:  ocaml, ocaml-findlib-devel, ocaml-omake
 BuildRequires:  ocaml-lablgtk-devel
@@ -49,9 +51,10 @@ developing applications using camlimages
 Includes documentation provided by ocamldoc
 
 %prep
-%setup -q -n camlspotter-camlimages-13777ef409e7
-%setup -q -T -D -a 1 -n camlspotter-camlimages-13777ef409e7
+%setup -q -n camlspotter-camlimages-8ca76028cff3
+%setup -q -T -D -a 1 -n camlspotter-camlimages-8ca76028cff3
 %patch1 -p1
+%patch2 -p2
 
 %build
 omake CFLAGS="$RPM_OPT_FLAGS" --verbose
@@ -92,6 +95,10 @@ cp -pr License.txt htmlref $RPM_BUILD_ROOT/usr/share/doc/ocaml-camlimages
 
 
 %changelog
+* Wed Nov 22 2017 Richard W.M. Jones <rjones@redhat.com> - 4.2.5-1
+- New upstream version 4.2.5.
+- New version fixes compatibility with latest lablgtk.
+
 * Fri Nov 17 2017 Richard W.M. Jones <rjones@redhat.com> - 4.2.4-2
 - OCaml 4.06.0 rebuild.
 
diff --git a/sources b/sources
index 4bb7b1b..5cc1da6 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (4.2.4.tar.gz) = fbd132ad1a88ff7d2e5f72190893806f97a08dfe1d8aad9e50f9417701ba6142e36e5e4253962869befda4cc87e96b1e714fbee5a03fbd48cd051d7034bf0ad6
 SHA512 (camlimages-2.2.0-htmlref.tar.gz) = 20cc6b7d92494f2e38700e9c9aed0d9663bed857662037a532241e60a80c5a2dcb308426007c50dfcfbf718098e930fd886ecdc22d5b8c168d08b4f287ab4d02
+SHA512 (4.2.5.tar.gz) = 8ca5f4f9c49dc2ad86dac3da640422f45816f510ace5fba975eda0046e4973b624d13022b50a4d5f93d425d0fe1e126ca7a008f3421b8383f43ca7c27442bceb