diff --git a/pkgs/development/coq-modules/bignums/default.nix b/pkgs/development/coq-modules/bignums/default.nix
index 0d5a892e2e96..14a7f2dc4e24 100644
--- a/pkgs/development/coq-modules/bignums/default.nix
+++ b/pkgs/development/coq-modules/bignums/default.nix
@@ -1,25 +1,25 @@
 { stdenv, fetchFromGitHub, coq }:
 
-let params =
-  let v_8_8_0 = {
-      rev = "V8.8.0";
-      sha256 = "1ymxyrvjygscxkfj3qkq66skl3vdjhb670rzvsvgmwrjkrakjnfg";
+let params = {
+      "8.6" = {
+        rev = "v8.6.0";
+        sha256 = "0553pcsy21cyhmns6k9qggzb67az8kl31d0lwlnz08bsqswigzrj";
+      };
+      "8.7" = {
+        rev = "V8.7.0";
+        sha256 = "11c4sdmpd3l6jjl4v6k213z9fhrmmm1xnly3zmzam1wrrdif4ghl";
+      };
+      "8.8" = {
+        rev = "V8.8.0";
+        sha256 = "1ymxyrvjygscxkfj3qkq66skl3vdjhb670rzvsvgmwrjkrakjnfg";
+      };
+      "8.9" = {
+        rev = "V8.9.0";
+        sha256 = "03qz1w2xb2j5p06liz5yyafl0fl9vprcqm6j0iwi7rxwghl00p01";
+      };
     };
-  in
-  {
-    "8.6" = {
-      rev = "v8.6.0";
-      sha256 = "0553pcsy21cyhmns6k9qggzb67az8kl31d0lwlnz08bsqswigzrj";
-    };
-    "8.7" = {
-      rev = "V8.7.0";
-      sha256 = "11c4sdmpd3l6jjl4v6k213z9fhrmmm1xnly3zmzam1wrrdif4ghl";
-    };
-    "8.8" = v_8_8_0;
-    "8.9" = v_8_8_0;
-  };
-  param = params."${coq.coq-version}"
-; in
+    param = params."${coq.coq-version}";
+in
 
 stdenv.mkDerivation rec {
 
diff --git a/pkgs/development/coq-modules/equations/default.nix b/pkgs/development/coq-modules/equations/default.nix
index 86e5687321b4..b31fcde1b80b 100644
--- a/pkgs/development/coq-modules/equations/default.nix
+++ b/pkgs/development/coq-modules/equations/default.nix
@@ -15,15 +15,15 @@ let
     };
 
     "8.8" = {
-      version = "1.0";
-      rev = "v1.0-8.8";
-      sha256 = "0dd7zd5j2sv5cw3mfwg33ss2vcj634q3qykakc41sv7f3rfgqfnn";
+      version = "1.2beta2";
+      rev = "v1.2-beta2-8.8";
+      sha256 = "1v9asdlhhks25ngnjn4dafx7nrcc5p0lhriqckh3y79nxbgpq4lx";
     };
 
     "8.9" = {
-      version = "1.2beta";
-      rev = "v1.2-beta-8.9";
-      sha256 = "1sj7vyarmvp1w5kvbhgpgap1yd0yrj4n1jrla0wv70k0jrq5hhpz";
+      version = "1.2beta2";
+      rev = "v1.2-beta2-8.9";
+      sha256 = "0y2zwv7jxs1crprj5qvg46h0v9wyfn99ln40yskq91y9h1lj5h3j";
     };
   };
   param = params."${coq.coq-version}";