diff --git a/contrib/minizip/minizip.pc.in b/contrib/minizip/minizip.pc.in
index 6339d8b1..17eb6a97 100644
--- a/contrib/minizip/minizip.pc.in
+++ b/contrib/minizip/minizip.pc.in
@@ -7,6 +7,7 @@ Name: minizip
 Description: Minizip zip file manipulation library
 Requires:
 Version: @PACKAGE_VERSION@
+License: Zlib
 Libs: -L${libdir} -lminizip
 Libs.private: -lz
 Cflags: -I${includedir}
diff --git a/zlib.pc.cmakein b/zlib.pc.cmakein
index 6da9e49f..a392727c 100644
--- a/zlib.pc.cmakein
+++ b/zlib.pc.cmakein
@@ -7,6 +7,7 @@ includedir=${exec_prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 Name: zlib
 Description: zlib compression library
 Version: @zlib_VERSION@
+License: Zlib
 
 Requires:
 Libs: -L${libdir} -L${sharedlibdir} -lz
diff --git a/zlib.pc.in b/zlib.pc.in
index 7e5acf9c..f247bd7f 100644
--- a/zlib.pc.in
+++ b/zlib.pc.in
@@ -7,6 +7,7 @@ includedir=@includedir@
 Name: zlib
 Description: zlib compression library
 Version: @VERSION@
+License: Zlib
 
 Requires:
 Libs: -L${libdir} -L${sharedlibdir} -lz