diff --git a/src/libs/jpeg/Jamfile b/src/libs/jpeg/Jamfile
index ea6063e399..975718f0f0 100644
--- a/src/libs/jpeg/Jamfile
+++ b/src/libs/jpeg/Jamfile
@@ -4,7 +4,7 @@ SetSubDirSupportedPlatformsBeOSCompatible ;
 
 UseLibraryHeaders jpeg ;
 
-local jpeg_files = 
+local jpeg_files =
 	jaricom.c
 	jcapimin.c
 	jcapistd.c
@@ -61,6 +61,8 @@ StaticLibrary libjpeg.a :
 
 SharedLibrary libjpeg.so :
 	$(jpeg_files)
+	:
+	: 8.0
 ;
 
 BinCommand jpegtran :
diff --git a/src/libs/png/Jamfile b/src/libs/png/Jamfile
index e994ccb0ec..397456f1ab 100644
--- a/src/libs/png/Jamfile
+++ b/src/libs/png/Jamfile
@@ -5,7 +5,7 @@ AddSubDirSupportedPlatforms libbe_test ;
 
 UseLibraryHeaders png zlib ;
 
-local shared_files = 
+local shared_files =
 	png.c
 	pngerror.c
 	pnggccrd.c
@@ -27,6 +27,6 @@ local shared_files =
 
 Objects $(shared_files) ;
 
-SharedLibrary libpng.so : [ FGristFiles $(shared_files:S=.o) ] : z ;
+SharedLibrary libpng.so : [ FGristFiles $(shared_files:S=.o) ] : z : 1.2 : ;
 
 StaticLibrary libpng.a : [ FGristFiles $(shared_files:S=.o) ] ;
diff --git a/src/libs/zlib/Jamfile b/src/libs/zlib/Jamfile
index 6455a4b970..e7b8ef9dfc 100644
--- a/src/libs/zlib/Jamfile
+++ b/src/libs/zlib/Jamfile
@@ -21,7 +21,7 @@ local shared_files =
 
 Objects $(shared_files) ;
 
-SharedLibrary libz.so : [ FGristFiles $(shared_files:S=.o) ] ;
+SharedLibrary libz.so : [ FGristFiles $(shared_files:S=.o) ] : : 1 : 2 ;
 
 StaticLibrary libz.a : [ FGristFiles $(shared_files:S=.o) ] ;