diff --git a/pyproject.toml b/pyproject.toml
index 4d1d1f0ec..1fb6cd9af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -121,7 +121,7 @@ dependencies = [
     # limits_validator, and python_executor wrapper).
     "pyepics",
     # PostgreSQL (required for native logbook_search capability and checkpointing)
-    "psycopg[binary,pool]>=3.1.0,<4.0.0",
+    "psycopg[binary,pool]>=3.3.4,<4.0.0",
     "psycopg-pool>=3.1.0,<4.0.0",
     # ARIEL proxy support for HTTP ingestion through SOCKS tunnels
     "aiohttp-socks>=0.8.0",
@@ -201,7 +201,7 @@ dev = [
     "testcontainers[postgres]>=4.14.2",  # Real PostgreSQL for integration tests
     "testcontainers[mongodb]>=4.14.2",  # MongoDB for archiver-mongodb integration tests
     "docker>=7.2.0",  # Docker SDK for testcontainers availability check
-    "psycopg[binary,pool]>=3.1.0,<4.0.0",  # ARIEL search integration tests
+    "psycopg[binary,pool]>=3.3.4,<4.0.0",  # ARIEL search integration tests
     "psycopg-pool>=3.1.0,<4.0.0",  # ARIEL search integration tests
     "pillow>=12.3.0",  # Perceptual diffing for the design-system visual regression suite
 ]
@@ -210,7 +210,7 @@ dev = [
 # See _ISSUES/MAJOR/ARIEL/ for specification
 ariel = [
     # PostgreSQL with pgvector for vector similarity search
-    "psycopg[pool]>=3.1.0,<4.0.0",
+    "psycopg[pool]>=3.3.4,<4.0.0",
     "psycopg-pool>=3.1.0,<4.0.0",
 ]