diff --git a/pkgs/build-support/php/build-composer-project.nix b/pkgs/build-support/php/build-composer-project.nix
index d614ca01eb71..778aa35fa6a5 100644
--- a/pkgs/build-support/php/build-composer-project.nix
+++ b/pkgs/build-support/php/build-composer-project.nix
@@ -13,6 +13,7 @@ let
       composerNoDev = previousAttrs.composerNoDev or true;
       composerNoPlugins = previousAttrs.composerNoPlugins or true;
       composerNoScripts = previousAttrs.composerNoScripts or true;
+      composerStrictValidation = previousAttrs.composerStrictValidation or true;
 
       nativeBuildInputs = (previousAttrs.nativeBuildInputs or [ ]) ++ [
         composer
@@ -69,6 +70,7 @@ let
         composerNoDev = previousAttrs.composerNoDev or true;
         composerNoPlugins = previousAttrs.composerNoPlugins or true;
         composerNoScripts = previousAttrs.composerNoScripts or true;
+        composerStrictValidation = previousAttrs.composerStrictValidation or true;
       };
 
       COMPOSER_CACHE_DIR="/dev/null";
diff --git a/pkgs/build-support/php/build-composer-repository.nix b/pkgs/build-support/php/build-composer-repository.nix
index 9487b61e16cb..5b31f86e61cf 100644
--- a/pkgs/build-support/php/build-composer-repository.nix
+++ b/pkgs/build-support/php/build-composer-repository.nix
@@ -32,6 +32,7 @@ let
       composerNoDev = previousAttrs.composerNoDev or true;
       composerNoPlugins = previousAttrs.composerNoPlugins or true;
       composerNoScripts = previousAttrs.composerNoScripts or true;
+      composerStrictValidation = previousAttrs.composerStrictValidation or true;
 
       name = "${previousAttrs.pname}-${previousAttrs.version}-composer-repository";
 
diff --git a/pkgs/build-support/php/hooks/composer-install-hook.sh b/pkgs/build-support/php/hooks/composer-install-hook.sh
index 3326f99b6dd4..6fe1c4e5f7dd 100644
--- a/pkgs/build-support/php/hooks/composer-install-hook.sh
+++ b/pkgs/build-support/php/hooks/composer-install-hook.sh
@@ -107,7 +107,26 @@ composerInstallBuildHook() {
 composerInstallCheckHook() {
     echo "Executing composerInstallCheckHook"
 
-    composer validate --no-ansi --no-interaction
+    if ! composer validate --strict --no-ansi --no-interaction --quiet; then
+        if [ ! -z "${composerStrictValidation-}" ]; then
+            echo
+            echo -e "\e[31mERROR: composer files validation failed\e[0m"
+            echo
+            echo -e '\e[31mThe validation of the composer.json and composer.lock failed.\e[0m'
+            echo -e '\e[31mMake sure that the file composer.lock is consistent with composer.json.\e[0m'
+            echo
+            exit 1
+        else
+            echo
+            echo -e "\e[33mWARNING: composer files validation failed\e[0m"
+            echo
+            echo -e '\e[33mThe validation of the composer.json and composer.lock failed.\e[0m'
+            echo -e '\e[33mMake sure that the file composer.lock is consistent with composer.json.\e[0m'
+            echo
+            echo -e '\e[33mThis check is not blocking, but it is recommended to fix the issue.\e[0m'
+            echo
+        fi
+    fi
 
     echo "Finished composerInstallCheckHook"
 }
diff --git a/pkgs/build-support/php/hooks/composer-repository-hook.sh b/pkgs/build-support/php/hooks/composer-repository-hook.sh
index d8f204e5df2f..03783d9d639c 100644
--- a/pkgs/build-support/php/hooks/composer-repository-hook.sh
+++ b/pkgs/build-support/php/hooks/composer-repository-hook.sh
@@ -3,6 +3,7 @@ declare version
 declare composerNoDev
 declare composerNoPlugins
 declare composerNoScripts
+declare composerStrictValidation
 
 preConfigureHooks+=(composerRepositoryConfigureHook)
 preBuildHooks+=(composerRepositoryBuildHook)
@@ -65,7 +66,26 @@ composerRepositoryBuildHook() {
 composerRepositoryCheckHook() {
     echo "Executing composerRepositoryCheckHook"
 
-    composer validate --no-ansi --no-interaction
+    if ! composer validate --strict --no-ansi --no-interaction --quiet; then
+        if [ ! -z "${composerStrictValidation-}" ]; then
+            echo
+            echo -e "\e[31mERROR: composer files validation failed\e[0m"
+            echo
+            echo -e '\e[31mThe validation of the composer.json and composer.lock failed.\e[0m'
+            echo -e '\e[31mMake sure that the file composer.lock is consistent with composer.json.\e[0m'
+            echo
+            exit 1
+        else
+            echo
+            echo -e "\e[33mWARNING: composer files validation failed\e[0m"
+            echo
+            echo -e '\e[33mThe validation of the composer.json and composer.lock failed.\e[0m'
+            echo -e '\e[33mMake sure that the file composer.lock is consistent with composer.json.\e[0m'
+            echo
+            echo -e '\e[33mThis check is not blocking, but it is recommended to fix the issue.\e[0m'
+            echo
+        fi
+    fi
 
     echo "Finished composerRepositoryCheckHook"
 }