diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index db737c3e2a6e..8d10404e05f4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4551,6 +4551,7 @@ in
 
   liquidsoap = callPackage ../tools/audio/liquidsoap/full.nix {
     ffmpeg = ffmpeg-full;
+    ocamlPackages = ocaml-ng.ocamlPackages_4_07;
   };
 
   lksctp-tools = callPackage ../os-specific/linux/lksctp-tools { };
@@ -8361,7 +8362,9 @@ in
 
   fsharp41 = callPackage ../development/compilers/fsharp41 { mono = mono6; };
 
-  fstar = callPackage ../development/compilers/fstar { };
+  fstar = callPackage ../development/compilers/fstar {
+    ocamlPackages = ocaml-ng.ocamlPackages_4_07;
+  };
 
   dotnetPackages = recurseIntoAttrs (callPackage ./dotnet-packages.nix {});
 
@@ -10163,6 +10166,7 @@ in
   fffuu = haskell.lib.justStaticExecutables (haskellPackages.callPackage ../tools/misc/fffuu { });
 
   flow = callPackage ../development/tools/analysis/flow {
+    ocamlPackages = ocaml-ng.ocamlPackages_4_07;
     inherit (darwin.apple_sdk.frameworks) CoreServices;
   };
 
@@ -21722,7 +21726,7 @@ in
 
   stalonetray = callPackage ../applications/window-managers/stalonetray {};
 
-  inherit (ocamlPackages) stog;
+  inherit (ocaml-ng.ocamlPackages_4_07) stog;
 
   stp = callPackage ../applications/science/logic/stp { };
 
@@ -24409,7 +24413,9 @@ in
 
   abc-verifier = callPackage ../applications/science/logic/abc {};
 
-  abella = callPackage ../applications/science/logic/abella {};
+  abella = callPackage ../applications/science/logic/abella {
+    ocamlPackages = ocaml-ng.ocamlPackages_4_07;
+  };
 
   acgtk = callPackage ../applications/science/logic/acgtk {};
 
@@ -24417,7 +24423,9 @@ in
 
   aspino = callPackage ../applications/science/logic/aspino {};
 
-  beluga = callPackage ../applications/science/logic/beluga { };
+  beluga = callPackage ../applications/science/logic/beluga {
+    ocamlPackages = ocaml-ng.ocamlPackages_4_07;
+  };
 
   boogie = dotnetPackages.Boogie;
 
@@ -24765,7 +24773,9 @@ in
   golly = callPackage ../applications/science/misc/golly { wxGTK = wxGTK30; };
   golly-beta = callPackage ../applications/science/misc/golly/beta.nix { wxGTK = wxGTK30; };
 
-  megam = callPackage ../applications/science/misc/megam { };
+  megam = callPackage ../applications/science/misc/megam {
+    inherit (ocaml-ng.ocamlPackages_4_07) ocaml;
+  };
 
   netlogo = callPackage ../applications/science/misc/netlogo { };
 
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 0a3cbc6f1c3a..e8a6bc21035b 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1229,5 +1229,5 @@ in let inherit (pkgs) callPackage; in rec
 
   ocamlPackages_latest = ocamlPackages_4_10;
 
-  ocamlPackages = ocamlPackages_4_07;
+  ocamlPackages = ocamlPackages_4_08;
 }