diff --git a/pkgs/applications/science/chemistry/avogadro2/default.nix b/pkgs/applications/science/chemistry/avogadro2/default.nix
index 437123faafd8..6931c8621c96 100644
--- a/pkgs/applications/science/chemistry/avogadro2/default.nix
+++ b/pkgs/applications/science/chemistry/avogadro2/default.nix
@@ -2,17 +2,29 @@
 , openbabel, qttools, wrapQtAppsHook
 }:
 
-stdenv.mkDerivation rec {
+let
+  avogadroI18N = fetchFromGitHub {
+    owner = "OpenChemistry";
+    repo = "avogadro-i18n";
+    rev = "3b8a86cc37e988b043d1503d2f11068389b0aca3";
+    sha256 = "9wLY7/EJyIZYnlUAMsViCwD5kGc1vCNbk8vUhb90LMQ=";
+  };
+
+in stdenv.mkDerivation rec {
   pname = "avogadro2";
-  version = "1.94.0";
+  version = "1.95.1";
 
   src = fetchFromGitHub {
     owner = "OpenChemistry";
     repo = "avogadroapp";
     rev = version;
-    sha256 = "6RaiX23YUMfTYAuSighcLGGlJtqeydNgi3PWGF77Jp8=";
+    sha256 = "9GnsxQsMuik6CPDmJbJPF0/+LXbZHf/JLevpSsMEoP0=";
   };
 
+  postUnpack = ''
+    cp -r ${avogadroI18N} avogadro-i18n
+  '';
+
   nativeBuildInputs = [ cmake wrapQtAppsHook ];
 
   buildInputs = [
diff --git a/pkgs/development/libraries/science/chemistry/avogadrolibs/default.nix b/pkgs/development/libraries/science/chemistry/avogadrolibs/default.nix
index 1130f5c44e70..b7f5f5f6d90e 100644
--- a/pkgs/development/libraries/science/chemistry/avogadrolibs/default.nix
+++ b/pkgs/development/libraries/science/chemistry/avogadrolibs/default.nix
@@ -21,13 +21,13 @@ let
 
 in stdenv.mkDerivation rec {
   pname = "avogadrolibs";
-  version = "1.94.0";
+  version = "1.95.1";
 
   src = fetchFromGitHub {
     owner = "OpenChemistry";
     repo = pname;
     rev = version;
-    sha256 = "6bChJhqrjOxeEWZBNToq3JExHPu7DUMsEHWBDe75zAo=";
+    sha256 = "0zzVg8xNqFwDrK8gRkDm3tRgBt7fD4K3Uy/ajUBc+eQ=";
   };
 
   postUnpack = ''
diff --git a/pkgs/development/libraries/science/chemistry/libmsym/default.nix b/pkgs/development/libraries/science/chemistry/libmsym/default.nix
index 8c605f3e07d4..fdcf7d00e3ba 100644
--- a/pkgs/development/libraries/science/chemistry/libmsym/default.nix
+++ b/pkgs/development/libraries/science/chemistry/libmsym/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = " molecular point group symmetry lib";
-    homepage = "https://github.com/rcsb/mmtf-cpp";
+    homepage = "https://github.com/mcodev31/libmsym";
     license = licenses.mit;
     platforms = platforms.linux;
     maintainers = [ maintainers.sheepforce ];