diff --git a/pkgs/applications/editors/vscode/extensions/amazonwebservices.amazon-q-vscode/default.nix b/pkgs/applications/editors/vscode/extensions/amazonwebservices.amazon-q-vscode/default.nix
index 9a8f38be2647..47157bcb6e27 100644
--- a/pkgs/applications/editors/vscode/extensions/amazonwebservices.amazon-q-vscode/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/amazonwebservices.amazon-q-vscode/default.nix
@@ -12,7 +12,7 @@ vscode-utils.buildVscodeMarketplaceExtension (finalAttrs: {
   };
 
   meta = {
-    changelog = "https://github.com/aws/aws-toolkit-vscode/releases/tag/amazonq%2Fv${finalAttrs.version}";
+    # changelog = "https://github.com/aws/aws-toolkit-vscode/releases/tag/amazonq%2Fv${finalAttrs.version}";
     description = "Amazon Q, CodeCatalyst, Local Lambda debug, SAM/CFN syntax, ECS Terminal, AWS resources";
     downloadPage = "https://marketplace.visualstudio.com/items?itemName=AmazonWebServices.amazon-q-vscode";
     homepage = "https://github.com/aws/aws-toolkit-vscode";
diff --git a/pkgs/by-name/bc/bcg729/package.nix b/pkgs/by-name/bc/bcg729/package.nix
index 88a72a5bcf4d..b1d630502e8a 100644
--- a/pkgs/by-name/bc/bcg729/package.nix
+++ b/pkgs/by-name/bc/bcg729/package.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation (finalAttrs: {
   meta = {
     description = "Opensource implementation of both encoder and decoder of the ITU G729 Annex A/B speech codec";
     homepage = "https://linphone.org/technical-corner/bcg729";
-    changelog = "https://gitlab.linphone.org/BC/public/bcg729/raw/${finalAttrs.version}/NEWS";
+    changelog = "https://gitlab.linphone.org/BC/public/bcg729/blob/${finalAttrs.version}/CHANGELOG.md";
     license = lib.licenses.gpl3Plus;
     maintainers = [ ];
     platforms = lib.platforms.all;
diff --git a/pkgs/by-name/ch/cherrytree/package.nix b/pkgs/by-name/ch/cherrytree/package.nix
index b549027a2945..b02866241749 100644
--- a/pkgs/by-name/ch/cherrytree/package.nix
+++ b/pkgs/by-name/ch/cherrytree/package.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
       a Cherrytree document where you can easily find it.
     '';
     homepage = "https://www.giuspen.com/cherrytree";
-    changelog = "https://raw.githubusercontent.com/giuspen/cherrytree/${finalAttrs.version}/changelog.txt";
+    changelog = "https://raw.githubusercontent.com/giuspen/cherrytree/v${finalAttrs.version}/changelog.txt";
     license = lib.licenses.gpl3Plus;
     maintainers = [ ];
     platforms = lib.platforms.unix;
diff --git a/pkgs/by-name/cq/cq/package.nix b/pkgs/by-name/cq/cq/package.nix
index aa96298e53cd..7348e14c066d 100644
--- a/pkgs/by-name/cq/cq/package.nix
+++ b/pkgs/by-name/cq/cq/package.nix
@@ -35,7 +35,7 @@ buildGraalvmNativeImage (finalAttrs: {
   meta = {
     description = "Clojure Query: A Command-line Data Processor for JSON, YAML, EDN, XML and more";
     homepage = "https://github.com/markus-wa/cq";
-    changelog = "https://github.com/markus-wa/cq/releases/releases/tag/${finalAttrs.version}";
+    changelog = "https://github.com/markus-wa/cq/releases/tag/${finalAttrs.version}";
     license = lib.licenses.epl20;
     maintainers = [ ];
     platforms = lib.platforms.unix;
diff --git a/pkgs/by-name/di/discordchatexporter-cli/package.nix b/pkgs/by-name/di/discordchatexporter-cli/package.nix
index eab6a0f87f73..a613ab27ced9 100644
--- a/pkgs/by-name/di/discordchatexporter-cli/package.nix
+++ b/pkgs/by-name/di/discordchatexporter-cli/package.nix
@@ -45,7 +45,7 @@ buildDotnetModule rec {
     description = "Tool to export Discord chat logs to a file";
     homepage = "https://github.com/Tyrrrz/DiscordChatExporter";
     license = lib.licenses.gpl3Plus;
-    changelog = "https://github.com/Tyrrrz/DiscordChatExporter/blob/${version}/Changelog.md";
+    changelog = "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/${version}";
     maintainers = [ ];
     platforms = lib.platforms.unix;
     mainProgram = "discordchatexporter-cli";
diff --git a/pkgs/by-name/di/discordchatexporter-desktop/package.nix b/pkgs/by-name/di/discordchatexporter-desktop/package.nix
index b9138fd54c71..475e651b162e 100644
--- a/pkgs/by-name/di/discordchatexporter-desktop/package.nix
+++ b/pkgs/by-name/di/discordchatexporter-desktop/package.nix
@@ -39,7 +39,7 @@ buildDotnetModule rec {
     description = "Tool to export Discord chat logs to a file (GUI version)";
     homepage = "https://github.com/Tyrrrz/DiscordChatExporter";
     license = lib.licenses.gpl3Plus;
-    changelog = "https://github.com/Tyrrrz/DiscordChatExporter/blob/${version}/Changelog.md";
+    changelog = "https://github.com/Tyrrrz/DiscordChatExporter/releases/tag/${version}";
     maintainers = with lib.maintainers; [ willow ];
     platforms = [ "x86_64-linux" ];
     mainProgram = "discordchatexporter";
diff --git a/pkgs/by-name/dy/dyndnsc/package.nix b/pkgs/by-name/dy/dyndnsc/package.nix
index 77bdc0837705..1dd0ce5f1895 100644
--- a/pkgs/by-name/dy/dyndnsc/package.nix
+++ b/pkgs/by-name/dy/dyndnsc/package.nix
@@ -61,7 +61,7 @@ python3Packages.buildPythonApplication (finalAttrs: {
       external notification services.
     '';
     homepage = "https://github.com/infothrill/python-dyndnsc";
-    changelog = "https://github.com/infothrill/python-dyndnsc/releases/tag/${finalAttrs.version}";
+    changelog = "https://github.com/infothrill/python-dyndnsc/blob/${finalAttrs.src.rev}/CHANGELOG.rst";
     license = lib.licenses.mit;
     maintainers = [ ];
     mainProgram = "dyndnsc";
diff --git a/pkgs/by-name/fr/frawk/package.nix b/pkgs/by-name/fr/frawk/package.nix
index 26a849e95420..b8c298ccc996 100644
--- a/pkgs/by-name/fr/frawk/package.nix
+++ b/pkgs/by-name/fr/frawk/package.nix
@@ -54,7 +54,6 @@ rustPlatform.buildRustPackage (finalAttrs: {
     description = "Small programming language for writing short programs processing textual data";
     mainProgram = "frawk";
     homepage = "https://github.com/ezrosent/frawk";
-    changelog = "https://github.com/ezrosent/frawk/releases/tag/v${finalAttrs.version}";
     license = with lib.licenses; [
       mit # or
       asl20
diff --git a/pkgs/by-name/mk/mksh/package.nix b/pkgs/by-name/mk/mksh/package.nix
index cebf5527aec7..211be284035b 100644
--- a/pkgs/by-name/mk/mksh/package.nix
+++ b/pkgs/by-name/mk/mksh/package.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   meta = {
     homepage = "http://www.mirbsd.org/mksh.htm";
-    changelog = "https://www.mirbsd.org/mksh.htm#clog";
+    changelog = "http://www.mirbsd.org/mksh.htm#clog";
     description = "MirBSD Korn Shell";
     mainProgram = "mksh";
     longDescription = ''
diff --git a/pkgs/development/libraries/fmt/default.nix b/pkgs/development/libraries/fmt/default.nix
index 3b9a89e670f4..538d53284787 100644
--- a/pkgs/development/libraries/fmt/default.nix
+++ b/pkgs/development/libraries/fmt/default.nix
@@ -60,7 +60,11 @@ let
           used as a fast and safe alternative to printf and IOStreams.
         '';
         homepage = "https://fmt.dev/";
-        changelog = "https://github.com/fmtlib/fmt/blob/${version}/ChangeLog.rst";
+        changelog =
+          let
+            ext = if lib.versionOlder version "10" then "rst" else "md";
+          in
+          "https://github.com/fmtlib/fmt/blob/${version}/ChangeLog.${ext}";
         downloadPage = "https://github.com/fmtlib/fmt/";
         maintainers = [ ];
         license = lib.licenses.mit;