diff --git a/atk/Cargo.toml b/atk/Cargo.toml
index 601bc4b6037b..499e0f1a83fe 100644
--- a/atk/Cargo.toml
+++ b/atk/Cargo.toml
@@ -30,8 +30,8 @@ features = ["dox"]
 [dependencies]
 libc = "0.2"
 bitflags = "1.0"
-ffi = { package = "atk-sys", path = "sys" }
-glib = { git = "https://github.com/gtk-rs/gtk-rs-core" }
+ffi = { package = "atk-sys", path = "sys", version = "0.16" }
+glib = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
 
 [dev-dependencies]
 gir-format-check = "^0.1"
diff --git a/atk/sys/Cargo.toml b/atk/sys/Cargo.toml
index fab9851d4b29..0939e287fbb0 100644
--- a/atk/sys/Cargo.toml
+++ b/atk/sys/Cargo.toml
@@ -7,10 +7,14 @@ libc = "0.2"
 [dependencies.glib]
 package = "glib-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gobject]
 package = "gobject-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dev-dependencies]
 shell-words = "1.0.0"
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 31ac02a52e4a..e5e94057739d 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -11,23 +11,31 @@ futures-util = "0.3"
 once_cell = "1.2.0"
 
 [dependencies.glib]
+version = "0.16"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+branch = "0.16"
 
 [dependencies.gtk]
 path = "../gtk"
 
 [dependencies.pangocairo]
+version = "0.16"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+branch = "0.16"
 optional = true
 
 [dependencies.cairo]
 package = "cairo-rs"
+version = "0.16"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+branch = "0.16"
 features = ["png"]
 optional = true
 
 [build-dependencies.glib-build-tools]
+version = "0.16"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+branch = "0.16"
 
 [[bin]]
 name = "accessibility"
diff --git a/gdk/Cargo.toml b/gdk/Cargo.toml
index ec93c3ecb363..6e09a71a9efb 100644
--- a/gdk/Cargo.toml
+++ b/gdk/Cargo.toml
@@ -29,12 +29,12 @@ features = ["dox"]
 [dependencies]
 libc = "0.2"
 bitflags = "1.0"
-ffi = { package = "gdk-sys", path = "sys" }
-cairo-rs = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-gdk-pixbuf = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-gio = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-glib = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-pango = { git = "https://github.com/gtk-rs/gtk-rs-core" }
+ffi = { package = "gdk-sys", path = "sys", version = "0.16" }
+cairo-rs = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+gdk-pixbuf = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+gio = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+glib = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+pango = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
 
 [dev-dependencies]
 gir-format-check = "^0.1"
diff --git a/gdk/sys/Cargo.toml b/gdk/sys/Cargo.toml
index 8ffcd1b8449e..df5567f5ce79 100644
--- a/gdk/sys/Cargo.toml
+++ b/gdk/sys/Cargo.toml
@@ -8,26 +8,38 @@ libc = "0.2"
 [dependencies.cairo]
 package = "cairo-sys-rs"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gdk_pixbuf]
 package = "gdk-pixbuf-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gio]
 package = "gio-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.glib]
 package = "glib-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gobject]
 package = "gobject-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.pango]
 package = "pango-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dev-dependencies]
 shell-words = "1.0.0"
diff --git a/gdkwayland/Cargo.toml b/gdkwayland/Cargo.toml
index fcb19074e74d..2c76e78e7569 100644
--- a/gdkwayland/Cargo.toml
+++ b/gdkwayland/Cargo.toml
@@ -21,9 +21,9 @@ dox = ["ffi/dox", "gdk/dox", "glib/dox"]
 features = ["dox"]
 
 [dependencies]
-ffi = { path = "./sys", package = "gdkwayland-sys" }
-gdk = { path = "../gdk" }
-glib = { git = "https://github.com/gtk-rs/gtk-rs-core" }
+ffi = { path = "./sys", package = "gdkwayland-sys", version = "0.16" }
+gdk = { path = "../gdk", version = "0.16" }
+glib = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
 libc = "0.2"
 wayland-client = { version = "0.29", features = ["use_system_lib"] }
 
diff --git a/gdkwayland/sys/Cargo.toml b/gdkwayland/sys/Cargo.toml
index 6a8ae16cb189..15a3bb9623ca 100644
--- a/gdkwayland/sys/Cargo.toml
+++ b/gdkwayland/sys/Cargo.toml
@@ -24,14 +24,19 @@ libc = "0.2"
 [dependencies.glib]
 package = "glib-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gobject]
 package = "gobject-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gdk]
 package = "gdk-sys"
 path = "../../gdk/sys"
+version = "0.16"
 
 [build-dependencies]
 pkg-config = "0.3.7"
diff --git a/gdkx11/Cargo.toml b/gdkx11/Cargo.toml
index 9a22d299e29d..182125497c3f 100644
--- a/gdkx11/Cargo.toml
+++ b/gdkx11/Cargo.toml
@@ -26,10 +26,10 @@ features = ["dox"]
 [dependencies]
 libc = "0.2"
 x11 = "2.18"
-ffi = { package = "gdkx11-sys", path = "sys" }
-glib = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-gdk = { path = "../gdk" }
-gio = { git = "https://github.com/gtk-rs/gtk-rs-core" }
+ffi = { package = "gdkx11-sys", path = "sys", version = "0.16" }
+glib = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+gdk = { path = "../gdk", version = "0.16" }
+gio = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
 
 [dev-dependencies]
 gir-format-check = "^0.1"
diff --git a/gdkx11/sys/Cargo.toml b/gdkx11/sys/Cargo.toml
index 6d1690fb3f77..7b95b3b2007f 100644
--- a/gdkx11/sys/Cargo.toml
+++ b/gdkx11/sys/Cargo.toml
@@ -32,15 +32,20 @@ x11 = "2.18"
 [dependencies.gdk]
 package = "gdk-sys"
 path = "../../gdk/sys"
+version = "0.16"
 
 [dependencies.glib]
 package = "glib-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.cairo]
 package = "cairo-sys-rs"
 git = "https://github.com/gtk-rs/gtk-rs-core"
 optional = true
+version = "0.16"
+branch = "0.16"
 
 [build-dependencies]
 system-deps = "6"
diff --git a/gtk/Cargo.toml b/gtk/Cargo.toml
index 5bc37ee8028e..f7513dc1943a 100644
--- a/gtk/Cargo.toml
+++ b/gtk/Cargo.toml
@@ -50,15 +50,15 @@ bitflags = "1.0"
 field-offset = "0.3"
 futures-channel = "0.3"
 once_cell = "1.0"
-atk = { path = "../atk" }
-ffi = { package = "gtk-sys", path = "sys" }
-gtk3-macros = { path = "../gtk3-macros" }
-cairo-rs = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-gio = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-glib = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-gdk = { path = "../gdk" }
-gdk-pixbuf = { git = "https://github.com/gtk-rs/gtk-rs-core" }
-pango = { git = "https://github.com/gtk-rs/gtk-rs-core" }
+atk = { path = "../atk", version = "0.16" }
+ffi = { package = "gtk-sys", path = "sys", version = "0.16" }
+gtk3-macros = { path = "../gtk3-macros", version = "0.16" }
+cairo-rs = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+gio = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+glib = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+gdk = { path = "../gdk", version = "0.16" }
+gdk-pixbuf = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
+pango = { version = "0.16", git = "https://github.com/gtk-rs/gtk-rs-core", branch = "0.16" }
 
 [dev-dependencies]
 gir-format-check = "^0.1"
diff --git a/gtk/sys/Cargo.toml b/gtk/sys/Cargo.toml
index 3944d7b15308..b9426bb490b1 100644
--- a/gtk/sys/Cargo.toml
+++ b/gtk/sys/Cargo.toml
@@ -44,34 +44,48 @@ libc = "0.2"
 [dependencies.glib]
 package = "glib-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gobject]
 package = "gobject-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gio]
 package = "gio-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.atk]
 package = "atk-sys"
 path = "../../atk/sys"
+version = "0.16"
 
 [dependencies.gdk_pixbuf]
 package = "gdk-pixbuf-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.gdk]
 package = "gdk-sys"
 path = "../../gdk/sys"
+version = "0.16"
 
 [dependencies.pango]
 package = "pango-sys"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [dependencies.cairo]
 package = "cairo-sys-rs"
 git = "https://github.com/gtk-rs/gtk-rs-core"
+version = "0.16"
+branch = "0.16"
 
 [build-dependencies]
 system-deps = "6"
diff --git a/gtk3-macros/Cargo.toml b/gtk3-macros/Cargo.toml
index 0eb7f135fcf2..77b86fb0d029 100644
--- a/gtk3-macros/Cargo.toml
+++ b/gtk3-macros/Cargo.toml
@@ -28,4 +28,4 @@ syn = { version = "1.0", default-features = false, features = ["full"] }
 proc-macro-crate = "1.0"
 
 [dev-dependencies]
-gtk = { path = "../gtk" }
+gtk = { path = "../gtk", version = "0.16" }