diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 635048872653..270be7633a47 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -18,7 +18,7 @@ jobs:
           - stable
           - beta
           - nightly
-          - "1.70.0"
+          - "1.80.0"
         conf:
           - { name: "cairo", features: "png,pdf,svg,ps,use_glib,v1_18,freetype,script,xcb,xlib,win32-surface", nightly: "--features 'png,pdf,svg,ps,use_glib,v1_18,freetype,script,xcb,xlib,win32-surface'", test_sys: true }
           - { name: "gdk-pixbuf", features: "v2_42", nightly: "--all-features", test_sys: true }
@@ -104,7 +104,7 @@ jobs:
           - stable
           - beta
           - nightly
-          - "1.70.0"
+          - "1.80.0"
     steps:
       - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
diff --git a/Cargo.toml b/Cargo.toml
index ba86c1d237ba..752071ea23ae 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,11 +30,9 @@ authors = ["The gtk-rs Project Developers"]
 version = "0.21.0"
 repository = "https://github.com/gtk-rs/gtk-rs-core"
 license = "MIT"
-exclude = [
-    "gir-files/*",
-]
+exclude = ["gir-files/*"]
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.80"
 
 [workspace.dependencies]
 libc = "0.2"
diff --git a/README.md b/README.md
index 71f6bb85d859..5c0e3cc678a8 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ information about each crate, please refer to their `README.md` file in their di
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/cairo/README.md b/cairo/README.md
index a553f7b207ff..83e5454a3835 100644
--- a/cairo/README.md
+++ b/cairo/README.md
@@ -8,7 +8,7 @@ Cairo __1.14__ is the lowest supported version for the underlying library.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Default-on features
 
diff --git a/gdk-pixbuf/README.md b/gdk-pixbuf/README.md
index 4e0d0f6fcb93..59cfb09f1718 100644
--- a/gdk-pixbuf/README.md
+++ b/gdk-pixbuf/README.md
@@ -6,7 +6,7 @@ GDK-PixBuf __2.36.8__ is the lowest supported version for the underlying library
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/gio/README.md b/gio/README.md
index 40645a774f98..8d6e38442190 100644
--- a/gio/README.md
+++ b/gio/README.md
@@ -6,7 +6,7 @@ GIO __2.56__ is the lowest supported version for the underlying library.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/glib-build-tools/README.md b/glib-build-tools/README.md
index 6f8fca4875b3..6fcf89e0610a 100644
--- a/glib-build-tools/README.md
+++ b/glib-build-tools/README.md
@@ -4,7 +4,7 @@ Crate containing helpers for building GIO-based applications.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/glib/README.md b/glib/README.md
index b069ee4effcf..8f611427cf6e 100644
--- a/glib/README.md
+++ b/glib/README.md
@@ -16,7 +16,7 @@ crates.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Dynamic typing
 
diff --git a/graphene/README.md b/graphene/README.md
index 4e600e34932a..c6b75fe51f41 100644
--- a/graphene/README.md
+++ b/graphene/README.md
@@ -6,7 +6,7 @@ Graphene __1.10__ is the lowest supported version for the underlying library.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/pango/README.md b/pango/README.md
index 0c99cd3c2c80..bbcec65d65c7 100644
--- a/pango/README.md
+++ b/pango/README.md
@@ -6,7 +6,7 @@ Pango __1.40__ is the lowest supported version for the underlying library.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/pangocairo/README.md b/pangocairo/README.md
index a155fb34ff09..7c2d66a17d70 100644
--- a/pangocairo/README.md
+++ b/pangocairo/README.md
@@ -7,7 +7,7 @@ PangoCairo __1.40__ is the lowest supported version for the underlying library.
 
 ## Minimum supported Rust version
 
-Currently, the minimum supported Rust version is `1.70.0`.
+Currently, the minimum supported Rust version is `1.80.0`.
 
 ## Documentation
 
diff --git a/tests/two-levels-glib-dependent/glib-dependent-dependent/Cargo.toml b/tests/two-levels-glib-dependent/glib-dependent-dependent/Cargo.toml
index e099ed85520b..d3030c357c77 100644
--- a/tests/two-levels-glib-dependent/glib-dependent-dependent/Cargo.toml
+++ b/tests/two-levels-glib-dependent/glib-dependent-dependent/Cargo.toml
@@ -6,7 +6,7 @@ description = "crate that depends on a glib-rs dependent crate for validation of
 keywords = ["gtk-rs-core", "integration"]
 license = "MIT/Apache-2.0"
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.80"
 
 [dependencies]
 # Use `gstreamer` as a simulation of an identified crate re-exporting `glib`.
diff --git a/tests/two-levels-glib-dependent/gstreamer/Cargo.toml b/tests/two-levels-glib-dependent/gstreamer/Cargo.toml
index 454ed38f6304..338349a8bec5 100644
--- a/tests/two-levels-glib-dependent/gstreamer/Cargo.toml
+++ b/tests/two-levels-glib-dependent/gstreamer/Cargo.toml
@@ -7,7 +7,7 @@ description = "gstreamer simulator as a glib dependent crate for validation of g
 keywords = ["gtk-rs-core", "integration"]
 license = "MIT/Apache-2.0"
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.80"
 
 [dependencies]
 glib = { path = "../../../glib" }
diff --git a/tests/two-levels-glib-dependent/gtk/Cargo.toml b/tests/two-levels-glib-dependent/gtk/Cargo.toml
index b19030ba4456..ed0cf601795e 100644
--- a/tests/two-levels-glib-dependent/gtk/Cargo.toml
+++ b/tests/two-levels-glib-dependent/gtk/Cargo.toml
@@ -7,7 +7,7 @@ description = "gtk simulator as a glib dependent crate for validation of glib re
 keywords = ["gtk-rs-core", "integration"]
 license = "MIT/Apache-2.0"
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.80"
 
 [dependencies]
 glib = { path = "../../../glib" }