diff --git a/cmake/java.cmake b/cmake/java.cmake
index 173ff89abd..4872d31b29 100644
--- a/cmake/java.cmake
+++ b/cmake/java.cmake
@@ -379,6 +379,7 @@ add_custom_command(
   COMMAND ${CMAKE_COMMAND} -E
     $<IF:$<BOOL:${BUILD_Protobuf}>,copy,true>
     $<$<BOOL:${BUILD_Protobuf}>:$<TARGET_SONAME_FILE:protobuf::libprotobuf>>
+    $<$<BOOL:${BUILD_Protobuf}>:$<TARGET_SONAME_FILE:utf8_validity>>
     ${JAVA_RESSOURCES_PATH}/${JAVA_NATIVE_PROJECT}/
 
   COMMAND ${CMAKE_COMMAND} -E
diff --git a/cmake/python.cmake b/cmake/python.cmake
index cbdbeb7b90..9f6e60c0c1 100644
--- a/cmake/python.cmake
+++ b/cmake/python.cmake
@@ -533,6 +533,7 @@ add_custom_command(
   COMMAND ${CMAKE_COMMAND} -E
     $<IF:$<BOOL:${BUILD_Protobuf}>,copy,true>
     $<$<BOOL:${BUILD_Protobuf}>:$<TARGET_SONAME_FILE:protobuf::libprotobuf>>
+    $<$<BOOL:${BUILD_Protobuf}>:$<TARGET_SONAME_FILE:utf8_validity>>
     ${PYTHON_PROJECT}/.libs
 
   COMMAND ${CMAKE_COMMAND} -E
diff --git a/ortools/dotnet/Google.OrTools.runtime.csproj.in b/ortools/dotnet/Google.OrTools.runtime.csproj.in
index 3f8dd6932c..74ab70cc19 100644
--- a/ortools/dotnet/Google.OrTools.runtime.csproj.in
+++ b/ortools/dotnet/Google.OrTools.runtime.csproj.in
@@ -116,6 +116,7 @@
       $<$<BOOL:@BUILD_re2@>:;$<TARGET_SONAME_FILE:re2::re2>>
 
       $<$<BOOL:@BUILD_Protobuf@>:;$<TARGET_SONAME_FILE:protobuf::libprotobuf>>
+      $<$<BOOL:@BUILD_Protobuf@>:;$<TARGET_SONAME_FILE:utf8_validity>>
 
       $<$<BOOL:@BUILD_CoinUtils@>:;$<TARGET_SONAME_FILE:Coin::CoinUtils>>
       $<$<BOOL:@BUILD_Osi@>:;$<TARGET_SONAME_FILE:Coin::Osi>>