diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1b3928a8..b7e6fae0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -16,7 +16,7 @@ variables:
   INSTALL_CMD: ninja -v -C $BUILD_DIR install
 
   # Fedora packages
-  FEDORA_DEPS: vala gobject-introspection-devel
+  FEDORA_DEPS: vala
                meson desktop-file-utils libcanberra-devel libgee-devel
                glib2-devel gmime-devel gtk3-devel libnotify-devel sqlite-devel
                webkitgtk4-devel libsecret-devel libxml2-devel vala-tools
@@ -25,7 +25,7 @@ variables:
   FEDORA_TEST_DEPS: Xvfb tar xz
 
   # Ubuntu & Debian packages
-  UBUNTU_DEPS: valac libgirepository1.0-dev
+  UBUNTU_DEPS: valac
                meson desktop-file-utils libcanberra-dev
                libgee-0.8-dev libglib2.0-dev libgmime-2.6-dev libgtk-3-dev
                libsecret-1-dev libxml2-dev libnotify-dev libsqlite3-dev
diff --git a/INSTALL b/INSTALL
index d096dd12..6fcb606a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -41,7 +41,7 @@ Installing dependencies on Fedora
 Fedora 25 and later ships with the correct versions of the required
 libraries. Install them by running this command:
 
-    sudo yum install vala gobject-introspection-devel meson \
+    sudo yum install vala meson \
         desktop-file-utils iso-codes-devel libcanberra-devel libgee-devel \
         glib2-devel gmime-devel gtk3-devel libnotify-devel sqlite-devel \
         webkitgtk4-devel libsecret-devel libxml2-devel vala-tools \
diff --git a/debian/control b/debian/control
index 3813b756..667883d6 100644
--- a/debian/control
+++ b/debian/control
@@ -10,7 +10,6 @@ Build-Depends: debhelper (>= 8),
  libenchant-dev,
  libgcr-3-dev,
  libgee-0.8-dev,
- libgirepository1.0-dev,
  libglib2.0-dev (>= 2.54.0),
  libgmime-2.6-dev (>= 2.6.17),
  libgoa-1.0-dev,
diff --git a/meson.build b/meson.build
index ee4a5f9d..a1f76576 100644
--- a/meson.build
+++ b/meson.build
@@ -60,7 +60,6 @@ gdk = dependency('gdk-3.0', version: '>=' + target_gtk)
 gee = dependency('gee-0.8', version: '>= 0.8.5')
 gio = dependency('gio-2.0', version: '>=' + target_glib)
 goa = dependency('goa-1.0')
-gobject_introspection = dependency('gobject-introspection-1.0')
 gthread = dependency('gthread-2.0', version: '>=' + target_glib)
 iso_codes = dependency('iso-codes')
 javascriptcoregtk = dependency('javascriptcoregtk-4.0', version: '>=' + target_webkit)