diff --git a/pkgs/development/libraries/psol/default.nix b/pkgs/development/libraries/psol/default.nix
index dd6037e68329..270c24dc01f4 100644
--- a/pkgs/development/libraries/psol/default.nix
+++ b/pkgs/development/libraries/psol/default.nix
@@ -1,5 +1,5 @@
 { callPackage }:
 callPackage ./generic.nix {} {
-  version = "1.13.35.1"; # Latest beta, 2017-11-08
-  sha256  = "126823gpr3rdqakwixmr887rbvwhksr3xg14jnyzlp84q4hg1p0n";
+  version = "1.13.35.2"; # Latest stable, 2018-02-05
+  sha256  = "0xi2srf9gx0x2sz9r45zb35k2n0iv457if1lqzvbanls3f935cmr";
 }
diff --git a/pkgs/servers/http/nginx/modules.nix b/pkgs/servers/http/nginx/modules.nix
index 36d0ea6b1e88..780f20017982 100644
--- a/pkgs/servers/http/nginx/modules.nix
+++ b/pkgs/servers/http/nginx/modules.nix
@@ -152,8 +152,8 @@
       moduleSrc = fetchFromGitHub {
         owner  = "pagespeed";
         repo   = "ngx_pagespeed";
-        rev    = "v${version}-beta";
-        sha256 = "176skx7zmi7islc1hmdxcynix4lkvgmr78lknn13s9gskc7qi25w";
+        rev    = "v${version}-stable";
+        sha256 = "0ry7vmkb2bx0sspl1kgjlrzzz6lbz07313ks2lr80rrdm2zb16wp";
       };
 
       ngx_pagespeed = pkgs.runCommand