diff --git a/meson.build b/meson.build
index 49c692b75..53db337a1 100644
--- a/meson.build
+++ b/meson.build
@@ -25,6 +25,15 @@ apiversion = '0.3'
 soversion = 0
 libversion = '@0@.@1@.0'.format(soversion, pipewire_version_minor.to_int() * 100 + pipewire_version_micro.to_int())
 
+# LADI/jack
+# 3, for PipeWire being the third JACK implementation, after JACK1 and jackdmp/JACK2)
+jack_version_major = 3
+jack_version_minor = pipewire_version_minor.to_int() * 100 + pipewire_version_micro.to_int()
+# libjack[server] version has 0 for major (for compatibility with other implementations),
+# 3 for minor, and "100*pipewire_version_minor + pipewire_version_micro"
+# as micro version (the minor libpipewire soversion number)
+libjackversion = '@0@.@1@.@2@'.format(soversion, jack_version_major, jack_version_minor)
+
 pipewire_name = 'pipewire-@0@'.format(apiversion)
 spa_name = 'spa-@0@'.format(spaversion)
 
diff --git a/pipewire-jack/src/meson.build b/pipewire-jack/src/meson.build
index 20d1ccf8e..daa4bcdef 100644
--- a/pipewire-jack/src/meson.build
+++ b/pipewire-jack/src/meson.build
@@ -36,7 +36,7 @@ configure_file(input : 'pw-jack.in',
 pipewire_jack = shared_library('jack',
     pipewire_jack_sources,
     soversion : soversion,
-    version : libversion,
+    version : libjackversion,
     c_args : pipewire_jack_c_args,
     include_directories : [configinc, jack_inc],
     dependencies : [pipewire_dep, mathlib],
@@ -47,7 +47,7 @@ pipewire_jack = shared_library('jack',
 pipewire_jackserver = shared_library('jackserver',
     pipewire_jackserver_sources,
     soversion : soversion,
-    version : libversion,
+    version : libjackversion,
     c_args : pipewire_jack_c_args,
     include_directories : [configinc, jack_inc],
     dependencies : [pipewire_dep, mathlib],
@@ -58,7 +58,7 @@ pipewire_jackserver = shared_library('jackserver',
 pipewire_jacknet = shared_library('jacknet',
     pipewire_net_sources,
     soversion : soversion,
-    version : libversion,
+    version : libjackversion,
     c_args : pipewire_jack_c_args,
     include_directories : [configinc, jack_inc],
     dependencies : [pipewire_dep, mathlib],