diff --git a/pkgs/applications/science/math/sage/pybrial.nix b/pkgs/applications/science/math/sage/pybrial.nix
index 092a340bb5b518..718414126ae8f0 100644
--- a/pkgs/applications/science/math/sage/pybrial.nix
+++ b/pkgs/applications/science/math/sage/pybrial.nix
@@ -1,6 +1,7 @@
 { stdenv
 , fetchFromGitHub
 , buildPythonPackage
+, brial
 }:
 # This has a cyclic dependency with sage. I don't include sage in the
 # buildInputs and let python figure it out at runtime. Because of this,
@@ -9,15 +10,10 @@
 # it).
 buildPythonPackage rec {
     pname = "pyBRiAl";
-    version = "1.2.3";
+    version = brial.version;
 
     # included with BRiAl source
-    src = fetchFromGitHub {
-      owner = "BRiAl";
-      repo = "BRiAl";
-      rev = version;
-      sha256 = "0qy4cwy7qrk4zg151cmws5cglaa866z461cnj9wdnalabs7v7qbg";
-    };
+    src = brial.src;
 
     sourceRoot = "source/sage-brial";
 
diff --git a/pkgs/development/libraries/science/math/brial/default.nix b/pkgs/development/libraries/science/math/brial/default.nix
index f08f6425655f4d..56a78b00cd6483 100644
--- a/pkgs/development/libraries/science/math/brial/default.nix
+++ b/pkgs/development/libraries/science/math/brial/default.nix
@@ -8,14 +8,14 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "1.2.5";
+  version = "1.2.6";
   pname = "brial";
 
   src = fetchFromGitHub {
     owner = "BRiAl";
     repo = "BRiAl";
     rev = version;
-    sha256 = "1nv56fp3brpzanxj7vwvxqdafqfsfhdgq5imr3m94psw5gdfqwja";
+    sha256 = "1mc1zjr3mxcx6bg0js5k9jx65japg7644b0aj1al75m4nwh2ygab";
   };
 
   # FIXME package boost-test and enable checks