diff --git a/.changeset/fix-missing-runtime-deps.md b/.changeset/fix-missing-runtime-deps.md
new file mode 100644
index 0000000000..0206424cdc
--- /dev/null
+++ b/.changeset/fix-missing-runtime-deps.md
@@ -0,0 +1,6 @@
+---
+'@backstage/catalog-client': patch
+'@backstage/frontend-plugin-api': patch
+---
+
+Moved dependencies that are re-exported in the public API from `devDependencies` to `dependencies`. These were incorrectly demoted in #33936 because the source code only uses type imports, but the types still appear in the published API surface and need to be resolvable by consumers at build time.
diff --git a/packages/catalog-client/package.json b/packages/catalog-client/package.json
index ed87a8c293..f527316262 100644
--- a/packages/catalog-client/package.json
+++ b/packages/catalog-client/package.json
@@ -51,13 +51,13 @@
     "@backstage/catalog-model": "workspace:^",
     "@backstage/errors": "workspace:^",
     "@backstage/filter-predicates": "workspace:^",
+    "@backstage/plugin-catalog-common": "workspace:^",
     "cross-fetch": "^4.0.0",
     "lodash": "^4.17.21",
     "uri-template": "^2.0.0"
   },
   "devDependencies": {
     "@backstage/cli": "workspace:^",
-    "@backstage/plugin-catalog-common": "workspace:^",
     "@types/lodash": "^4.14.151",
     "msw": "^1.0.0"
   }
diff --git a/packages/frontend-plugin-api/package.json b/packages/frontend-plugin-api/package.json
index f4f4e51bf9..f9e7caccce 100644
--- a/packages/frontend-plugin-api/package.json
+++ b/packages/frontend-plugin-api/package.json
@@ -44,6 +44,7 @@
     "test": "backstage-cli package test"
   },
   "dependencies": {
+    "@backstage/config": "workspace:^",
     "@backstage/errors": "workspace:^",
     "@backstage/filter-predicates": "workspace:^",
     "@backstage/types": "workspace:^",
@@ -54,7 +55,6 @@
   },
   "devDependencies": {
     "@backstage/cli": "workspace:^",
-    "@backstage/config": "workspace:^",
     "@backstage/frontend-app-api": "workspace:^",
     "@backstage/frontend-test-utils": "workspace:^",
     "@backstage/test-utils": "workspace:^",