diff --git a/pkgs/development/tools/ocaml/opam/default.nix b/pkgs/development/tools/ocaml/opam/default.nix
index 4fe408fb77f0..b99880fe7f33 100644
--- a/pkgs/development/tools/ocaml/opam/default.nix
+++ b/pkgs/development/tools/ocaml/opam/default.nix
@@ -11,8 +11,8 @@ let
       sha256 = "18jqphjiifljlh9jg8zpl6310p3iwyaqphdkmf89acyaix0s4kj1";
     };
     cppo = fetchurl {
-      url = "https://github.com/mjambon/cppo/archive/v1.6.5.tar.gz";
-      sha256 = "1dkm3d5h6h56y937gcdk2wixlpzl59vv5pmiafglr89p20kf7gqf";
+      url = "https://github.com/ocaml-community/cppo/releases/download/v1.6.6/cppo-v1.6.6.tbz";
+      sha256 = "185q0x54id7pfc6rkbjscav8sjkrg78fz65rgfw7b4bqlyb2j9z7";
     };
     cudf = fetchurl {
       url = "https://gforge.inria.fr/frs/download.php/36602/cudf-0.9.tar.gz";
@@ -27,8 +27,8 @@ let
       sha256 = "0dmf0wbfmgdy5plz1bjiisc2hjgblvxsnrqjmw2c8y45v1h23mdz";
     };
     extlib = fetchurl {
-      url = "http://ygrek.org.ua/p/release/ocaml-extlib/extlib-1.7.5.tar.gz";
-      sha256 = "19slqf5bdj0rrph2w41giwmn6df2qm07942jn058pjkjrnk30d4s";
+      url = "https://ygrek.org/p/release/ocaml-extlib/extlib-1.7.7.tar.gz";
+      sha256 = "1sxmzc1mx3kg62j8kbk0dxkx8mkf1rn70h542cjzrziflznap0s1";
     };
     mccs = fetchurl {
       url = "https://github.com/AltGr/ocaml-mccs/archive/1.1+11.tar.gz";
@@ -43,25 +43,25 @@ let
       sha256 = "0cjw69r7iilidi7b6arr92kjnjspchvwnmwr1b1gyaxqxpr2s98m";
     };
     re = fetchurl {
-      url = "https://github.com/ocaml/ocaml-re/releases/download/1.8.0/re-1.8.0.tbz";
-      sha256 = "0qkv42a4hpqpxvqa4kdkkcbhbg7aym9kv4mqgm3m51vxbd0pq0lv";
+      url = "https://github.com/ocaml/ocaml-re/releases/download/1.9.0/re-1.9.0.tbz";
+      sha256 = "1gas4ky49zgxph3870nffzkr6y41kkpqp4nj38pz1gh49zcf12aj";
     };
     result = fetchurl {
-      url = "https://github.com/janestreet/result/releases/download/1.3/result-1.3.tbz";
-      sha256 = "1lrnbxdq80gbhnp85mqp1kfk0bkh6q1c93sfz2qgnq2qyz60w4sk";
+      url = "https://github.com/janestreet/result/archive/1.4.tar.gz";
+      sha256 = "1cjlncnzkwc6zr4v8dgy8nin490blbyxzwwp0qh0cla7s3q2jw0n";
     };
     seq = fetchurl {
       url = "https://github.com/c-cube/seq/archive/0.1.tar.gz";
       sha256 = "02lb2d9i12bxrz2ba5wygk2bycan316skqlyri0597q7j9210g8r";
     };
     opam = fetchurl {
-      url = "https://github.com/ocaml/opam/archive/2.0.7.zip";
-      sha256 = "03yxj4hw9p5dh34b1yzl3xd0l1v2l2az0n7ix453yjrkn0wn0xic";
+      url = "https://github.com/ocaml/opam/archive/2.0.8.zip";
+      sha256 = "1h55jh4nnx1fcn7v7ss3fgxrn6ixkgnq7pvg5njz8c9xq4njwbc1";
     };
   };
 in stdenv.mkDerivation {
   pname = "opam";
-  version = "2.0.7";
+  version = "2.0.8";
 
   buildInputs = [ unzip curl ncurses ocaml makeWrapper getconf ] ++ lib.optional stdenv.isLinux bubblewrap;
 
@@ -69,7 +69,7 @@ in stdenv.mkDerivation {
 
   postUnpack = ''
     ln -sv ${srcs.cmdliner} $sourceRoot/src_ext/cmdliner.tbz
-    ln -sv ${srcs.cppo} $sourceRoot/src_ext/cppo.tar.gz
+    ln -sv ${srcs.cppo} $sourceRoot/src_ext/cppo.tbz
     ln -sv ${srcs.cudf} $sourceRoot/src_ext/cudf.tar.gz
     ln -sv ${srcs.dose3} $sourceRoot/src_ext/dose3.tar.gz
     ln -sv ${srcs.dune-local} $sourceRoot/src_ext/dune-local.tbz
@@ -78,7 +78,7 @@ in stdenv.mkDerivation {
     ln -sv ${srcs.ocamlgraph} $sourceRoot/src_ext/ocamlgraph.tar.gz
     ln -sv ${srcs.opam-file-format} $sourceRoot/src_ext/opam-file-format.tar.gz
     ln -sv ${srcs.re} $sourceRoot/src_ext/re.tbz
-    ln -sv ${srcs.result} $sourceRoot/src_ext/result.tbz
+    ln -sv ${srcs.result} $sourceRoot/src_ext/result.tar.gz
     ln -sv ${srcs.seq} $sourceRoot/src_ext/seq.tar.gz
   '';
 
@@ -117,4 +117,4 @@ in stdenv.mkDerivation {
     platforms = platforms.all;
   };
 }
-# Generated by: ./opam.nix.pl -v 2.0.7 -p opam-shebangs.patch
+# Generated by: ./opam.nix.pl -v 2.0.8 -p opam-shebangs.patch
diff --git a/pkgs/development/tools/ocaml/opam/opam.nix.pl b/pkgs/development/tools/ocaml/opam/opam.nix.pl
index 1cbad6f5f44e..b94aa7dd9a2f 100755
--- a/pkgs/development/tools/ocaml/opam/opam.nix.pl
+++ b/pkgs/development/tools/ocaml/opam/opam.nix.pl
@@ -21,7 +21,7 @@ chomp $OPAM_RELEASE_SHA256;
 
 my $OPAM_BASE_URL = "https://raw.githubusercontent.com/$OPAM_GITHUB_REPO/$OPAM_TAG";
 my $OPAM_OPAM = `curl -L --url \Q$OPAM_BASE_URL\E/opam-devel.opam`;
-my($OCAML_MIN_VERSION) = $OPAM_OPAM =~ /^available: ocaml-version >= "(.*)"$/m
+my($OCAML_MIN_VERSION) = $OPAM_OPAM =~ /^  "ocaml" {>= "(.*)"}$/m
   or die "could not parse ocaml version bound\n";
 
 print <<"EOF";