diff --git a/.ci/gitlab-ci.yml b/.ci/gitlab-ci.yml
index 0d717789f..caa78f385 100644
--- a/.ci/gitlab-ci.yml
+++ b/.ci/gitlab-ci.yml
@@ -1,7 +1,7 @@
 variables:
-  GTIRB_VERSION: ""
-  GTIRB_PPRINTER_VERSION: ""
-  CAPSTONE_VERSION: ""
+  GTIRB_VERSION: "1.11.0"
+  GTIRB_PPRINTER_VERSION: "1.9.0"
+  CAPSTONE_VERSION: "5.0.0-gt2"
   # The IMAGE_TAG is derived from the branch name so that if a branch modifies
   # the CI images, it builds and runs using the new images without conflicting
   # with main.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 980c48eb6..206f6b9b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 1.6.0 (Unreleased)
+# 1.6.0
 * ARM: Improve code inference using unwind information from .ARM.exidx section
 * Replace symbolic expression attributes with composable labels.
 * ddisasm output now displays runtimes of "load", "compute", and "transform"
diff --git a/conanfile.py b/conanfile.py
index 86424cc95..c03b294b4 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -89,13 +89,13 @@ def build_requirements(self):
             self.build_requires("ninja/1.10.2")
 
     boost_version = "1.69.0"
-    gtirb_version = "dev"
-    gtirb_pprinter_version = "dev"
-    capstone_version = "dev"
+    gtirb_version = "1.11.0"
+    gtirb_pprinter_version = "1.9.0"
+    capstone_version = "5.0.0-gt2"
     requires = (
         "boost/%s" % (boost_version),
-        "gtirb/%s@rewriting+gtirb/master" % (gtirb_version),
-        "gtirb-pprinter/%s@rewriting+gtirb-pprinter/master"
+        "gtirb/%s@rewriting+gtirb/stable" % (gtirb_version),
+        "gtirb-pprinter/%s@rewriting+gtirb-pprinter/stable"
         % (gtirb_pprinter_version),
         "capstone/%s@rewriting+extra-packages/next" % (capstone_version),
     )