diff --git a/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix b/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
index b7167d261b21..c6736980c3d9 100644
--- a/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
+++ b/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
@@ -44,11 +44,11 @@
 
 stdenv.mkDerivation rec {
   pname = "evolution";
-  version = "3.50.2";
+  version = "3.50.3";
 
   src = fetchurl {
     url = "mirror://gnome/sources/evolution/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "D4M1214mmFRHi01tlHLu2s0Kiev3+0+DdWJDMMqqcSA=";
+    sha256 = "sha256-s1SjsFzRmWSjya2k7m4RsCzI25JtiB7ww30FmzAd/KQ=";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/desktops/gnome/core/evolution-data-server/default.nix b/pkgs/desktops/gnome/core/evolution-data-server/default.nix
index 24a2e7d50e0d..a6fccb8713b3 100644
--- a/pkgs/desktops/gnome/core/evolution-data-server/default.nix
+++ b/pkgs/desktops/gnome/core/evolution-data-server/default.nix
@@ -33,7 +33,6 @@
 , enableOAuth2 ? stdenv.isLinux
 , webkitgtk_4_1
 , webkitgtk_6_0
-, libaccounts-glib
 , json-glib
 , glib
 , gtk3
@@ -51,13 +50,13 @@
 
 stdenv.mkDerivation rec {
   pname = "evolution-data-server";
-  version = "3.50.2";
+  version = "3.50.3";
 
   outputs = [ "out" "dev" ];
 
   src = fetchurl {
     url = "mirror://gnome/sources/evolution-data-server/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "XmYnA4jVDBTzsa4/oNISe5/tznUqzTk7VUUoGwH8SXA=";
+    sha256 = "sha256-Il1wtqQCaPIlwqxCjuXrUtWm/aJgKVXVCiSXBSb+JFI=";
   };
 
   patches = [
@@ -107,8 +106,6 @@ stdenv.mkDerivation rec {
     libphonenumber
     boost
     protobuf
-  ] ++ lib.optionals stdenv.isLinux [
-    libaccounts-glib
   ] ++ lib.optionals stdenv.isDarwin [
     libiconv
   ] ++ lib.optionals withGtk3 [
@@ -150,6 +147,10 @@ stdenv.mkDerivation rec {
       --replace "-Wl,--no-undefined" ""
     substituteInPlace src/services/evolution-alarm-notify/e-alarm-notify.c \
       --replace "G_OS_WIN32" "__APPLE__"
+  '' + lib.optionalString stdenv.cc.isClang ''
+    # https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/513
+    substituteInPlace src/addressbook/libebook-contacts/e-phone-number-private.cpp \
+      --replace "std::auto_ptr" "std::unique_ptr"
   '';
 
   postInstall = lib.optionalString stdenv.isDarwin ''
diff --git a/pkgs/desktops/gnome/core/evolution-data-server/hardcode-gsettings.patch b/pkgs/desktops/gnome/core/evolution-data-server/hardcode-gsettings.patch
index f502e89a71bd..6fef72819391 100644
--- a/pkgs/desktops/gnome/core/evolution-data-server/hardcode-gsettings.patch
+++ b/pkgs/desktops/gnome/core/evolution-data-server/hardcode-gsettings.patch
@@ -361,7 +361,7 @@ index e61160c..b6553a4 100644
  		G_CALLBACK (mi_user_headers_settings_changed_cb), NULL);
  	G_UNLOCK (mi_user_headers);
 diff --git a/src/camel/providers/imapx/camel-imapx-server.c b/src/camel/providers/imapx/camel-imapx-server.c
-index ef34665..59f294b 100644
+index 8518c90..6a655a9 100644
 --- a/src/camel/providers/imapx/camel-imapx-server.c
 +++ b/src/camel/providers/imapx/camel-imapx-server.c
 @@ -5627,7 +5627,18 @@ camel_imapx_server_do_old_flags_update (CamelFolder *folder)
diff --git a/pkgs/development/libraries/libgweather/default.nix b/pkgs/development/libraries/libgweather/default.nix
index 0ce3450f053e..53c4b5f259b7 100644
--- a/pkgs/development/libraries/libgweather/default.nix
+++ b/pkgs/development/libraries/libgweather/default.nix
@@ -65,6 +65,8 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dzoneinfo_dir=${tzdata}/share/zoneinfo"
     (lib.mesonBool "introspection" withIntrospection)
+  ] ++ lib.optionals stdenv.isDarwin [
+    "-Dc_args=-D_DARWIN_C_SOURCE"
   ];
 
   postPatch = ''