diff --git a/pkgs/development/libraries/java/rhino/default.nix b/pkgs/development/libraries/java/rhino/default.nix
index 1d8c54faed15..8016c7374ea3 100644
--- a/pkgs/development/libraries/java/rhino/default.nix
+++ b/pkgs/development/libraries/java/rhino/default.nix
@@ -63,7 +63,7 @@ stdenv.mkDerivation {
       to provide scripting to end users.
     '';
 
-    homepage = "http://www.mozilla.org/rhino/";
+    homepage = "https://rhino.github.io/";
 
     license = with licenses; [
       mpl11 # or
diff --git a/pkgs/development/python-modules/yargy/default.nix b/pkgs/development/python-modules/yargy/default.nix
index b4350676665f..1b13419b04bb 100644
--- a/pkgs/development/python-modules/yargy/default.nix
+++ b/pkgs/development/python-modules/yargy/default.nix
@@ -23,7 +23,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Rule-based facts extraction for Russian language";
-    homepage = "https://github.com/natasha/yargu";
+    homepage = "https://github.com/natasha/yargy";
     license = licenses.mit;
     maintainers = with maintainers; [ npatsakula ];
   };
diff --git a/pkgs/os-specific/linux/rtl8821cu/default.nix b/pkgs/os-specific/linux/rtl8821cu/default.nix
index 063c50e7c25b..32aa13cb81b5 100644
--- a/pkgs/os-specific/linux/rtl8821cu/default.nix
+++ b/pkgs/os-specific/linux/rtl8821cu/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation {
 
   meta = with lib; {
     description = "Realtek rtl8821cu driver";
-    homepage = "https://github.com/morrownr/8821cu";
+    homepage = "https://github.com/morrownr/8821cu-20210916";
     license = licenses.gpl2Only;
     platforms = platforms.linux;
     maintainers = [ maintainers.contrun ];